Compare the capabilities of the Microsoft Access, Microsoft SQL Serv.pdf
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Compare the capabilities of the Microsoft Access, Microsoft SQL Server, Oracle’s MySQL, and Oracle relational database management systems (RDBMSs). Your paper should discuss the processing speeds, data storage capabilities, maximum users supported, platforms supported, user interfaces, development tools, vendor support, and cost. Discuss and cite at least two references in addition to our textbook. Your paper should be 3-5 pages in length (excluding title and References pages) Solution Microsoft Access Overview: Microsoft Access is a part of Microsoft Office, it is commercially available database in the market Inexpensive/standard on most computers users can create complex databases database professionalas can use construct a database customers of MS-Access: It is mainly used in small corporate companies or IT Sectors with 1-80 endusers. Features of MS-Access: 1.It is having GUI Interface for creating databases 2. A databae contains tables, forms, reports, queries, macros. 3. It facilitates autocontent wizards to build tables or forms or reports. 4. It acts as an interface to other DBMS using ODBC 5. It is used for small business companies 6. Provides security like password protection 7. Provides a Data dictionary 8. We can repair the database 9. We can create different views 10. External data can be imported into Access 11. We can create web pages based using the database 12. It has as built in Macro functions 13. It uses Structurered Query Language 14. We can create forms, reports etc by using Visual Basic Application programming 15. Provides Add in controls like calendars 16. It can merged into word and analysed with Excel etc. Issues: Security: User level security is very difficult Tuning: It does not have the ability to split over multiple Hard Drives, multiple CPUs or to place tables into memory. Locking: Basic handling of concurrent users Backup and recovery at basic level. ANSI SQL standard often doesn\'t work,MS-Access has it\'s own modified version of ANSI SQL. MySQL Overview MySQL is a database engine. It has a command line interface that allows the creation of database. It Requires Front-end applications to access it for end users. EX:- C#, PHP, Microsoft ASP.Net. Typical users Small companies or workgroups, through to very large Internet databases with large numbers of users Ex:wikipedia,Moodle. Features 1. Speed:One of the fastest databases available 2. Ease of use: when compared to larger databases such as Oracle Uses standard SQL 3. Capability: A multi-threaded server allowing many clients to connect at the same time Fully networked for the Internet with built in security 4.Portability: Runs on a many operating systems and different hardware 5. Small size: when compared to other large databases e.g. Oracle 6. Availabliity and Cost: Open Source ,Free in most situations to use 7. Open distribution and source code: You can check how it works – if you have the knowledge. 8. interface to other DBMS’s using Open Database Connectivit.
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chance at survival without having to compete with the parent plant for space, nutrients and
sunlight. Dispersion also allows the species to spread its population across a wider territory to
ensure its continued survival.
Explanation: When too many seeds are planted in the same pot or area, the seedlings tend to be
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There are several ways in which seeds are dispersed naturally in plants. Gravity is sometimes
sufficient to pull down heavy seeds from tall plants. The seeds then roll away from the parent
plant and begin to grow. Animals also help with seed dispersion. The seeds can have surfaces
that facilitate their sticking to the fur or skin of the animals so they can be transported as the
animal moves around. When animals eat fruit containing seeds, the seeds pass through the
animals\' gastrointestinal tracts unaffected and are excreted at different locations along with
some fertilizer nutrients to help them grow. Some seeds are light enough or have special wing-
like adaptations to allow for dispersal by wind. Other seeds can float in water and move along
with streams to a new location where there are sufficient nutrients and no plants to compete with
for water and sun. Sometimes, seed pods burst with enough force that the seeds get thrown over
a distance to allow the seedlings to grow away from the parent plants. The numerous different
ways in which plants have evolved to perfect their technique of seed dispersion is a telltale sign
of how important it is for seedlings to grow away from the parent plants..
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far enough away from the parent so that they do not have to compete with the parent for light,
water, and soil minerals.
Seeds from the parent plant need to be dispersed away from the plant to allow the seedlings a
chance at survival without having to compete with the parent plant for space, nutrients and
sunlight. Dispersion also allows the species to spread its population across a wider territory to
ensure its continued survival.
Explanation: When too many seeds are planted in the same pot or area, the seedlings tend to be
weaker and more fragile because they have to compete with the other seedlings for resources.
There are several ways in which seeds are dispersed naturally in plants. Gravity is sometimes
sufficient to pull down heavy seeds from tall plants. The seeds then roll away from the parent
plant and begin to grow. Animals also help with seed dispersion. The seeds can have surfaces
that facilitate their sticking to the fur or skin of the animals so they can be transported as the
animal moves around. When animals eat fruit containing seeds, the seeds pass through the
animals\' gastrointestinal tracts unaffected and are excreted at different locations along with
some fertilizer nutrients to help them grow. Some seeds are light enough or have special wing-
like adaptations to allow for dispersal by wind. Other seeds can float in water and move along
with streams to a new location where there are sufficient nutrients and no plants to compete with
for water and sun. Sometimes, seed pods burst with enough force that the seeds get thrown over
a distance to allow the seedlings to grow away from the parent plants. The numerous different
ways in which plants have evolved to perfect their technique of seed dispersion is a telltale sign
of how important it is for seedlings to grow away from the parent plants..
How is FOIL used in factoring polynomialsSolutionFOIL method .pdf
How is FOIL used in factoring polynomialsSolutionFOIL method .pdfarihantplastictanksh How is FOIL used in factoring polynomials?
Solution
FOIL method is used for multiplying binomials. For example
F irst Terms
O utside Terms
I nside Terms
L ast Terms
(3x - 4)(2x + 1)
(3x)(2x) + (3x)(1) + (-4)(2x) + (-4)(1)
6x2 + 3x - 8x - 4
6x2 - 5x - 4 (combine like terms)
Remember FOIL works only when you multiply two binomials.
How did social revolution relate to warfare developmentSolution.pdf
How did social revolution relate to warfare developmentSolution.pdfarihantplastictanksh How did social revolution relate to warfare development?
Solution
Warfare has built up and devastated nations, it has molded and destroyed cultures, since the
beginning of civilization, warfare has left its impact on humanity, and it affects every aspect of
human culture and life. Some historians and psychologists argue that humans naturally engage in
warfare. Therefore, as long as the human race continues to exist, so will the art of warfare.
Others have different views, claiming that warfare arose as human civilizations developed, the
politics involved between towns, states, and countries created the conflicts that raged into war.
Although the origin and future of warfare remains uncertain, history shows that many changes
took place throughout the existence of war. From the small tribal conflicts of primitive man to
the global threat of nuclear warfare, warfare has drastically changed. This paper will discuss the
evolution of warfare, as well as the impact that technology has on it.
Defining warfare is a very difficult task. A simple definition is the use of physical force to settle
disputes between organized groups. On the other hand, a more complex idea states that war is an
organized struggle between groups in which each side seeks to displace or dispel, to dominate or
to punish, or simply to be rid of the other, by inflicting what we call defeat. Gallie defines two
eras of warfare: the classic and problematic stages. The classic phase of warfare lasted from the
establishment of war until about two hundred years ago. During this period, war affected every
day life. Many years were spent fighting wars. Even in times of peace, war was still anticipated,
and thus kept everyone prepared for war. The opposing sides gathered to fight and display their
army skills, resources, and bravery in order to overcome the enemy. The classic wars ended with
the collapse of the Napoleonic Age.
a social revolution is a bottom-up, as opposed to a vanguard party–led or purely political,
revolution aiming to reorganize all of society. In the words of Alexander Berkman, social
revolution means the reorganization of the industrial, economic life of the country and
consequently also of the entire structure of society. More generally, the term \"social revolution\"
may be used to refer to a massive change in society, for instance the French Revolution, the
American Civil Rights Movement and the 1960 hippie or counterculture reformation on religious
belief, personal identity, freedom of speech, music and the arts, fashion, alternative technology
or environmentalism and decentralised media.
Social revolution is contrasted with purely a political revolution in which the government is
replaced, or the form of government altered, but in which property relations are predominantly
left intact. Social revolutions do not imply necessarily that the working class as a whole has
control over the production and distribution of capital and goods - in many countries this control.
For the following I have finished most of this question but am havin.pdf
For the following I have finished most of this question but am havin.pdfarihantplastictanksh For the following I have finished most of this question but am having problem with on method. I
just need the void copyNumbers method filled out. The commented out sections describe what it
needs to do. I have it started. Just need it finished.
package reading_with_exceptions;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.InputMismatchException;
import java.util.Scanner;
public class Reading_With_Exceptions {
// 1.) Create a Scanner from the inputFilename. Catch exceptions from errors.
// 2.) Read the first String from the file and use it to create a PrintStream
// catching appropriate exceptions
// 3.) Using hasNextInt and nextInt, carefully read the count integer.
// I recommend -1 for a count value if it is bad to indicate reading ALL
// 4.) Use copyNumbers method described below to complete the job
// 5.) Close Scanner and PrintStream objects
// 6.) Call printToScreen to copy the output file to the screen
void process(String inputFilename) {
int number_to_read = 0;
try {
Scanner input = new Scanner(inputFilename);
String outputFilename = input.next();
PrintStream os = new PrintStream(new FileOutputStream(outputFilename));
if ( input.hasNextInt()) {
number_to_read = input.nextInt();
}else {
number_to_read = -1;
}
copyNumbers(input, os, number_to_read);
input.close();
os.close();
printToScreen(outputFilename);
}catch (FileNotFoundException e) {
System.out.println(\"Cannot find file: \" + e);
return;
}
}
// The following routine is called to complete the job of copying integers to
// the output file:
// scan - a Scanner object to copy integers from
// ps - A PrintStream to write the integers to
// numIntsToRead - number of integers to read. A value of -1 ==> read all integers
void copyNumbers(Scanner scan, PrintStream ps, int numIntsToRead) {
// hasNext() can be used to see if the scan object still has data
// Note that hasNextInt() can be used to see if an integer is present
// nextInt() will read an integer
// next() can be used to skip over bad integers
while (scan.hasNext()) {
if (numIntsToRead < 0) {
//print out a complaint message and then read as many integers as you find.
scan.nextInt();
}
if (!scan.hasNextInt()) {
// print a complaint message and skip over the data
scan.next();
}
if ( scan < numIntsToRead) {
// complain but do not abort
}
}
}
public static void main(String[] args) {
Reading_With_Exceptions rwe = new Reading_With_Exceptions();
for (int i=0; i < args.length; i++) {
System.out.println(\"\ \ =========== Processing \"+ args[i] + \" ==========\ \");
rwe.process(args[i]);
}
}
// For the last step, we Copy the contents of the file to the screen
private void printToScreen(String filename) {
Scanner scan = null;
try {
FileInputStream fis = new FileInputStream(filename);
scan = new Scanner(fis);
while (scan.hasNextLine()) {
System.out.println(scan.nextLine());
}
}
catch (FileNotFoundException e) {
System.out.println(\"printToS.
Does native Con A exist as a monomer, dimer, trimer, or tetramer.pdf
Does native Con A exist as a monomer, dimer, trimer, or tetramer.pdfarihantplastictanksh Does native Con A exist as a monomer, dimer, trimer, or tetramer?
Does native Con A exist as a monomer, dimer, trimer, or tetramer?
Solution
At pH=5, the Concanavalin exists as dimer. At pH= 5, Con A exists as three dimeric types are
possible: Homologous dimers of either 2 intact or 2 fragmented monomer units and a hybrid
dimer consisting of one monomer of each form. Binding results indicate:
a. That a mixture of dimeric types must bind at pH=5, some types having one binding sites per
molecule;
b. That species must have similar affinity for ligand..
Explain role ambiguity in terms of supportive leader behavior.So.pdf
Explain role ambiguity in terms of supportive leader behavior.So.pdfarihantplastictanksh Explain role ambiguity in terms of supportive leader behavior.
Solution
Role ambiguity is the lack of clarity about expected behavior from a position
Supportive leaders provide emotional support to employees, threat employees well and care
about them.
Role ambiguity in terms of supportive leader behavior is when the leader does not know how to
provide such emotional support to his team members, he does not know how to support them
when they are under stress or when they are unpleasent with their jobs..
Explain the benefit of designing a foundation with LRFD as opposed to.pdf
Explain the benefit of designing a foundation with LRFD as opposed to.pdfarihantplastictanksh Explain the benefit of designing a foundation with LRFD as opposed to ASD
Solution
The LRFD is certainly an improvement over the ASD. It takes better account of variability in
both loading and resistance. LRFD is a reliability based design. Even before taking my reliability
based design class, I always had my doubt in applying a single factor of safety for an output
derived from inputs of varying reliability. The one disadvantage of LRFD is the lack of sufficient
statistical data to select appropriate factors in certain specific cases, but still better than ASD..
Expand upon selectionSortType so that you are no longer bound to a l.pdf
Expand upon selectionSortType so that you are no longer bound to a l.pdfarihantplastictanksh Expand upon selectionSortType so that you are no longer bound to a list of 1000 elements. Thus,
you\'ll be using pointers to create dynamic arrays.
template
void selectionSortType::setUnsortedList (const elemType list[], int size)
{
elementsInList = size;
for (int i=0; i
void selectionSortType::getUnsortedList(elemType list[], int& size) const
{
size = elementsInList;
for (int i=0; i
void selectionSortType::getSortedList(elemType list[], int& size) const
{
size = elementsInList;
for (int i=0; i
int selectionSortType::getLargestElement() const
{
return sortedList[elementsInList-1];
}
template
int selectionSortType::getSmallestElement() const
{
return sortedList[0];
}
template
float selectionSortType::getAverage() const
{
float sum = 0;
for (int i=0; i
void selectionSortType::printUnsortedList(std::ostream& output) const
{
for (int i=0; i
void selectionSortType::printSortedList(std::ostream& output) const
{
for (int i=0; i
bool selectionSortType::equalList(const selectionSortType& otherList) const
{
if (otherList.elementsInList != elementsInList)
return false;
for (int i=0; i
selectionSortType::selectionSortType(const elemType list[], int size)
{
setUnsortedList(list,size);
}
template
selectionSortType::selectionSortType() //default constructor
{
elementsInList = 0;
}
template
void selectionSortType::sortList()
{
for (int i=0; i
Solution
template
void selectionSortType::setUnsortedList (const elemType list[], int size)
{
elementsInList = size;
for (int i=0; i
void selectionSortType::getUnsortedList(elemType list[], int& size) const
{
size = elementsInList;
for (int i=0; i
void selectionSortType::getSortedList(elemType list[], int& size) const
{
size = elementsInList;
for (int i=0; i
int selectionSortType::getLargestElement() const
{
return sortedList[elementsInList-1];
}
template
int selectionSortType::getSmallestElement() const
{
return sortedList[0];
}
template
float selectionSortType::getAverage() const
{
float sum = 0;
for (int i=0; i
void selectionSortType::printUnsortedList(std::ostream& output) const
{
for (int i=0; i
void selectionSortType::printSortedList(std::ostream& output) const
{
for (int i=0; i
bool selectionSortType::equalList(const selectionSortType& otherList) const
{
if (otherList.elementsInList != elementsInList)
return false;
for (int i=0; i
selectionSortType::selectionSortType(const elemType list[], int size)
{
setUnsortedList(list,size);
}
template
selectionSortType::selectionSortType() //default constructor
{
elementsInList = 0;
}
template
void selectionSortType::sortList()
{
for (int i=0; i.
describe the three major categorical theories of language developmen.pdf
describe the three major categorical theories of language developmen.pdfarihantplastictanksh describe the three major categorical theories of language development,as listed below .consider
the emphasis each places on innate abilities versus environment influences.also attribute key
terms and theorist with one if the following categories. write a one page report on a language
theorist or researcher who asserts a position that is different from your own preferred notion.
.Behaviorist
.Nativist
.Interactionist
Solution
1). Behaviourist: This is proposed by the behavioural theorists Skinner. As per his theory,
children imitate what they see and hear and all behaviour is acquired by learning, so it can be
unlearned by either the positive reinforcement or negative reinforcement. Skinner proposed that
the speech of children is shaped by adults by reinforcing the babbling of infants.
2). Nativist: Nativist Noam Chomsky proposed a “LAD”, Language Acquisition Device, and
believed that children are born with certain innate skills of language learning, which determines
their speed of learning. They can learn the native language at a high speed and can improve their
grammatical skills without much effort. The same inheritance factor is responsible for the skill of
learning multiple languages in certain people.
3). Interactionist: Lev Vygotsky described the concept of “zone of proximal development,”
which explains how the children learn better from the other children, i.e. collaborative learning.
School environment play an important role in improving the intellectual skills of the children by
means of classroom teachings and also learning from the other children. Interaction with the
other school children also influences the development of communication skills in the society.
Children learn from the other children in a better way than do from the adults..
case study of a female with a parasitic disease Here is a Microbiolog.pdf
case study of a female with a parasitic disease Here is a Microbiolog.pdfarihantplastictanksh case study of a female with a parasitic disease Here is a Microbiology student\'s story from her
point of view and in her own words. Some words were changed to aid in understanding, but the
context was not changed. This is an actual illness that happened to me whenIwas 18 years old
lving in Freetown, Sierra Leone, on the west coast of Africa. Here is some background
information tounderstand our living situation: My family and moved to the city as displaced
refugees due to several rebel attacks in my home town during the war. We rented afour bedroom
apartment for a family of over fifteen and shared two pot- hole toilets with over seventy people.
The house llved in was on top of asteep hilandat the bottom of the hill was a runni down the hill,
but ng stream of water where people in the neighborhood did laundry,inever went there were
many monitor lizards by the stream that would come up the hill sunny days to bask on the rocks.
My family and lused to dry our clothes on the rocks after washing them. My cook helped with
the laundry and a few times, my older sister bought snail meat from the market to because it was
cheap and I helped her prepare the food. on the last day of school holiday, had a sight headache
way home. When got home my mum gave me Tylenol (500mg) and I went to bed, but headache
did not stop That evening had a slight fever and some body aches. The headache continued and
was constant, with high fevers in the evenings and nights, and accompanied by chills. I have a
brother who is a doctor and was working in a private hospital. After a week of constant
headaches, and fevers my brother didamala test which was positive. I was gven since symptoms
got worse even after reatment for malaria, I was vomiting a lot, anemic, had abdominal pain.
received a blood transtusion with was very weak, could not walk and was dizzy all the time. One
day, was unconscious for a couple of hours and my family thought Iwas dying. This was after
my My to a stool found out another parastic disease along with malaria. I was given Braziguantel
for a day and after a days was feeling better and back my feet.ido not remember the exact three
months, submitted another stool sample for testing and it was negative.I was free from the
second parasite. Below is a picture of the eggs that the doctor would have seen upon microscopic
examination of the patient\'s stool. Distribution of this parasite is throughout Africa, but can also
be foundins America, the Caribbean, and Puerto Rico. what are the possible diagnoses for this
patient? What are your clues? What is the most likely diagnosis? Why? What are the sens and
symptoms? How is this disease transmitted? What are the causal agents? Which species s most
likely the causal agent in this case? wtyr what is the causal agent of malarla? what is the vector?
of the pathogen that causes this parastic disease? What is the classification the pathogen that
causes malaria? what is the classatication of the vector for malaria?
Solutio.
are marine multicellular protists belonging to the larger brown alg.pdf
are marine multicellular protists belonging to the larger brown alg.pdfarihantplastictanksh are marine multicellular protists belonging to the larger brown algae. They are responsible for
most of the food production through the photosynthesis in regions where they occur. The cell
walls of fungi are made up of polysaccharides and In hornworts and liverworts which are non-
vascular plants help anchor the minute plant. All plants exhibit of generations of diploid
sporophytes with haploid gametophytes. 88. In plants the sporophyte generation does not
produce as a result of melosis. Circulatory pathway between the lungs and the heart Most
flatworms are meaning each individual containing both male and female sexual structures. solid
worms that lack a body caity Members of the class octopuses, squids, and nautilus are the most
intelligent of the invertebrates. Leeches along with other oligochaetes possess an organ called a
which secretes a cocoon specialized to receive the eggs. The respiratory organ in the Arachinid,
spider is called Breaking up of fat globules into smaller droplets by the action of bile salts in
addition to containing two pairs antennae, also have legs on their abdomen and thorax,
Echinoderms are symmetrical animals with a five-part body plan. Lymphatic vessels that aids
the absorption of lipids Birds like mammals are meaning that they can regulate their body
temperatures within close limits. All vertebrates have a heart and a(n) circulatory system of
blood vessels.
Solution
Answer:
84). Stramenopiles
A subgroup of chromalveolates, the stramenopiles, also referred to as heterokonts, includes
photosynthetic marine algae and heterotrophic protists. The unifying feature of this group is the
presence of a textured, or \"hairy,\" flagellum.
85). Chitin
86). Rhizoids
Rhizoids are the colorless rootlike projections of mosses, liverworts, and hornworts that anchor
them to the substrate.
87). Alternation
The multicellular haploid plant structure is called the gametophyte, which is formed from the
spore and give rise to the haploid gametes. The fluctuation between these diploid and haploid
stages that occurs in plants is called the alternation of generations.
89). Pulmonary circulation
Pulmonary circulation is the portion of the cardiovascular system which carries deoxygenated
blood away from the heart, to the lungs, and returns oxygenated (oxygen-rich) blood back to the
heart. The term pulmonary circulation is readily paired and contrasted with the systemic
circulation.
90). Hermaphrodites
Many flatworms are \"hermaphroditic\". It means that each individual has both male and female
\"gonads\", structures producing the \"gametes\" (sex cells, each with half the normal number of
chromosomes)
91). Acelomates
Acoelomate: an invertebrate lacking a coelom; especially : one belonging to the group
comprising the flatworms and nemerteans and characterized by bilateral symmetry and a
digestive cavity that is the only internal cavity..
8-9 Which gene (C or D) is downstream in the pathway based on the ep.pdf
8-9 Which gene (C or D) is downstream in the pathway based on the ep.pdfarihantplastictanksh 8-9 Which gene (C or D) is downstream in the pathway based on the epistatic class for feeding
behavior? Gene C gene D Feeding Experiment: If methionine is added to the growth media of
these mutant strains, all of them can grow. Some of them can intermediates in the synthesis of
methionine are added. The intermediates include homocysteine, cysteine and cystathionine. In
the table below the growth behavior (+ or -) of the methionine auxotrophs are shown when each
strain is fed different compounds. Using this table, order the synthesis of intermediates from first
to last in the synthesis of methionine Order of intermediates: ---- rightarrow _________ ----
rightarrow _________ ---- rightarrow _________ methionine Above each arrow indicate where
each mutant (met A, B or Cor D) belongs. ---- rightarrow _________ ---- rightarrow
_________ ---- rightarrow _________ methionine What intermediate builds up in the met A
strain? _________ what intermediate builds up in the met C strain? __________ What
intermediate builds up in the met D strain?
Solution
1.The gene D is downstream in the process.
2.cysteine - cystathionine - homocysteine - methionine.
3.The first arrow represent strain B, the second arrow represent strain C, the third arrow
represent strain D and fourth arrow represent strain A..
4. Belief in God Religion Studies researchers were interested in ma.pdf
4. Belief in God Religion Studies researchers were interested in ma.pdfarihantplastictanksh 4. Belief in God: Religion Studies researchers were interested in making in- ferences about the
true proportion of Canadians who believe in some form of God. They randomly surveyed 100
Canadians and asked them whether or not they believed in God (‘Yes’ or ‘No’). 61 answered
‘Yes’. Below is the R output:
0.61
Solution
a) 61 [ANSWER]
b)
Ho: u = 0.5
Ha: u=/= 0.5 [ANSWER]
c) chi^2 = 4.84 [ANSWER]
d) chi^2(df = 1)
e)
(0.514403, 0.705597) [ANSWER]
f)
As this one is one tailed, then we divide the two tailed probability by 2,
P = 0.028/2 = 0.014 [ANSWER]
As P < 0.05, Reject Ho. [ANSWER]
g)
There is significant evidence that majority of Canadians believe in some form of God with P
value of 0.014..
18. Identify (at least 5) and explain their meanings of reducing ble.pdf
18. Identify (at least 5) and explain their meanings of reducing ble.pdfarihantplastictanksh 18. Identify (at least 5) and explain their meanings of reducing bleeding in concrete? 19. Identify
and explain the early year of Portland cement. When was it first produced in the US?
20. Aggregates are usually divided into how many groups?
21. Name and describe three chemical admixtures in concrete?
22. What are the major reasons for using chemical admixtures in concrete mixtures?
23. Why is concrete so widely used?
24. How can we produce air-entraining concrete?
25. What are concrete components?
26. What are footings? Name two types and show how they relate to the building?
27. What are two types of Concrete Buildings Systems?
28. What are the six categories of concrete wall systems in current use?
Solution
18) Bleeding in fresh concrete refers to the process where free water in the mix is pushed upward
to the surface due to the settlement of heavier solid particles such as cement and water. Some
bleeding is normal but excessive bleeding can be problematic. The way you work that bleed
water can affect the durability of your products.
The biggest factor in bleed water rates is the water-to-cement ratio. A higher ratio can lead to
excessive bleeding. The cement type and fine aggregates can play a role in determining the bleed
rate. The fewer fines you have in your mix, the more bleeding will occur. Factors also include
concrete height and pressure. The relationship between bleed water and concrete heights starts
off as linear, but eventually becomes nonlinear at increased heights.
Ways to reduce bleeding in concrete include:
19) Portland cement is a basic cement mixture and a fundamental ingredient for many common
cement applications. Because Portland cement is very common, it is also often called “Ordinary
Portland Cement” or simply “OPC.” Since the early 20th century, Portland cement has been used
internationally for a wide variety of applications including concrete projects, mortar pastes,
stucco decorations, and grout fillings
Roman cement was the predecessor to ordinary Portland cement. A crude form of Roman cement
was rediscovered by English engineer John Smeaton in 1756. The formula for Roman cement
was refined and patented in 1796 by James Parker.
Around 1811, James Frost developed British cement: a new way of processing cement that
became instrumental in making Portland cement. In 1824, the first form of Portland cement was
patented by English cement manufacturer Joseph Aspdin. Aspdin’s version of Portland cement
was further refined by his son, William, in 1843, and it closely resembled the ordinary Portland
cement we know today.
The United States imported Portland cement from Germany and England as early as 1868.
Between the 1970s and 1980s, the United States began manufacturing their Portland cement in
Michigan and Pennsylvania. Within a few years, most of the Portland cement used in the United
States was produced locally.
20) For a good concrete mix, aggregates need to be clean, hard, strong particles free of absorbed
chemicals o.
With enough money, energy, and political will, the nations of the wo.pdf
With enough money, energy, and political will, the nations of the wo.pdfarihantplastictanksh With enough money, energy, and political will, the nations of the world could build and launch a
space ship that will reach the nearest star, Alpha Centauri, and bring back news of life there:
A. Before this decade is over.
B. In about 50 years.
C. With current technology the trip would take a hundred thousand years.
D. With current technology we cannot get out of the Solar system, no matter how much time.
This question is rather difficult. I think it would take over 50 years because it may have to go to
each planet to look for life.
Solution
Its distance of 4.3 light-years equals 25.6 trillion miles away – nearly 300,000 times the distance
from the Earth to the sun. It would take over 100,000 years using conventional technology.
So the answer is C..
Which members of the truss are zero-force members Solutionass.pdf
Which members of the truss are zero-force members Solutionass.pdfarihantplastictanksh Which members of the truss are zero-force members?
Solution
assuming all members to be weightless.
at the joint E, the only force possible in the vertical direction is due to DE. so the vertical
component of force in DE should be zero, because the joint E is at equilibrium. If the vertical
component is zero means there is no force in that member; it is a pin jointed member and force
will be along the bar and it is an inclined bar. if there is a horizontal component, there will be a
vertical component.
EF is a zero force member, because there is no force in x direction at E as discussed before.
at joint D sum of forces along x direction should be zero. Since the DE is a zero force member,
CD should also be a zero force member
DF should also be a zero force member because at D both others are zero force members and
there will be no member to offer reaction force.
CF will have some force since it will have to compensate the vertical 10KN. and all other
members will havesome force from there onwards. the values of force will depend on the lengths
of the members.
so the zero force members are CD, DE, DF, and FE.
Which THREE of the following statements about autotrophs and heterot.pdf
Which THREE of the following statements about autotrophs and heterot.pdfarihantplastictanksh Which THREE of the following statements about autotrophs and heterotrophs on Earth are
TRUE?
Question 10 options: The answer is NOT 2, 6, 7 or 3, 5, 4
Heterotrophs that do not eat autotrophs every day will die in a short time.
Autotrophs depend on heterotrophs to oxidize sugar and release CO2 into the atmosphere.
The majority of heterotrophs on Earth do not use aerobic respiration as a form of energy
conversion.
Heterotrophs evolved on Earth before autotrophs.
The majority of autotrophs on Earth require aerobic respiration in order to survive.
Heterotrophs are dependent on autotrophs to generate O2 from H2O in order to support aerobic
respiration.
Heterotrophs depend on autotrophs for conversion of light energy to chemical energy.
There are no metabolic differences between autotrophs and heterotrophs.
Heterotrophs that do not eat autotrophs every day will die in a short time.
Autotrophs depend on heterotrophs to oxidize sugar and release CO2 into the atmosphere.
The majority of heterotrophs on Earth do not use aerobic respiration as a form of energy
conversion.
Heterotrophs evolved on Earth before autotrophs.
The majority of autotrophs on Earth require aerobic respiration in order to survive.
Heterotrophs are dependent on autotrophs to generate O2 from H2O in order to support aerobic
respiration.
Heterotrophs depend on autotrophs for conversion of light energy to chemical energy.
There are no metabolic differences between autotrophs and heterotrophs.
Solution
the correct statement would be :
4: because autotrophy is more complex than heterotrophy , the very first organisms were
heterotrophs because they could feed on the molecules surrounding them.
6: Heterotrophs are dependent on autotrophs to generate O2 from H2O in order to support
aerobic respiration.
because if the autotrophs do not produce oxygen then heterotrophs can\'t live. infact the earth\'s
atmosphere before autotrophs was without oxygen
7: Heterotrophs depend on autotrophs for conversion of light energy to chemical energy.
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What type of biometric error signifies that an authorized user has b.pdfarihantplastictanksh What type of biometric error signifies that an authorized user has been denied legitimate access?
A. Type I
B. Type II
C. Type III
D. Type IV
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answer is a.type1
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