Vascular graft You want to design a vascular graft. List some advant.pdf

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Vascular graft You want to design a vascular graft. List some advantages and disadvantages with each of the three major types (metals, ceramics, and polymers) of biomaterials. Which would you choose for this application? What specific material characteristics need to be considered for the arterial graft application? Would you use a natural or synthetic material for this application? What are advantages and disadvantages of each? Solution One common biomaterial application is the construction of an arterial graft, a device that replaces a section of an artery. An artery is flexible blood vessel that can withstand varying pressures and regulates the blood flow. Arteries also provide a smooth interior surface to prevent and type of blood clotting inside. Biomaterial Metals: Advantages: Strong, mouldable, stiff, electrically conductive, and surface roughness can encourage cell growth and integration of the material, may be inexpensive (than steel) Disadvantages: In-flexible, non-lubricating , can corrode in biological systems. Biomaterial Ceramic: Advantages: Strong , stiff and inert Disadvantages: Rigid, brittle and non-lubricating. Biomaterial polymers: Advantages: Lubricating, compliant, low weight, flexible, formed in-vivo(thermoplastic bone cements) Disadvantages: Certain types can be expensive, weak, degrades through releasing particles delaminating. I would use polymers because of its elasticity. 2. Flexibility is very important, and a material should also possess a certain tensile strength. The surface properties of materials such as smoothness and hydrophobicity must also be considered in terms of its ability to support adhesion of endothelial cells or not cause any damage to platelets. Moreover, the material should be easy to shape. 3. A natural polymer would be more likely to integrate into the surrounding tissues. However, natural polymers may not possess the necessary mechanical properties for this application. There is also possibility of evoking an immune response or a pathogen transmission. Synthetic polymers could be manufactured to have the necessary mechanical properties but may not integrate well wth native tissue. Either natural or synthetic is acceptable with proper justification..

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JAVA Programming Design a class Message that models an e-mail message. A message has a recipient, a sender, and a message text. Support the following methods: a. A constructor that takes the sender and recipient b. A method append that appends a line of text to the message body c. A method toString that makes the message into one long string like this: “From: Fname Lname\ To: Some Recipient\ …” Write a driver program that uses this class to make a message and print it. Solution MessageTest.java import java.util.Scanner; public class MessageTest { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System.out.println(\"Enter Recipient Name: \"); String recipientName = scan.nextLine(); System.out.println(\"Enter Sender Name: \"); String senderName = scan.nextLine(); System.out.println(\"Enter the body text: \"); String text = scan.nextLine(); Message m = new Message(recipientName, senderName); m.append(text); System.out.println(m.toString()); } } Message.java public class Message { private String recipient; private String sender; private String text; public Message(String r, String s){ this.recipient = r; this.sender = s; text = \"\"; } public void append(String t){ text = text + t +\"\ \"; } public String toString(){ return \"From: \"+sender+\"\ \ \"+text+\"\ To: \"+recipient+\"\ \"; } }.

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In which of the following structures are spores formed? (Select all that apply.)ovule conespollen conesNone of the answer options is correct.carpelsstamensIn which of the following structures are spores formed? (Select all that apply.)ovule conespollen conesNone of the answer options is correct.carpelsstamens Solution SPORES:it is very light and carried great distances survive in un favourable droughts and temperatures.A spore is a single cell that develop in to exact copy of plant from which it came.it is very small,spores core contain cytoplasm and dna. spores are formed in carpels and stamens.the stamens and carpels of flower contain sprongia,in which spores are developed..

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connellalykshamesb60

How does Windows manage/store user names and passwords? How does it differ from Unix? What privileges does the \"root\" UID have in Linux? Solution 1) the usernames and passwords in windows are hashed using \"NTLMv2\"algorithm which is a part of the suite of windows security protocols and finally encrypted credentials are stored in SAM (security account manager) present in the following directory C:\\windows\\system32\\config\\SAM 2) the user credential storage of windows differs from unix as said below : In old unix variants ,passwords are stored in etc/passwd in encrypted form. But in newer versions ,storage is etc/shadow which ensures no one can access the passwords except the root. 3)privileges of root in linux : - ability to modify OS - grant and revoke permissions - can access passwords file - read and modify configuration files.

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How to use class set a function(double money(); receive a number and then output with this number*2) and use it in the main, cpp? Solution //Here number is a part of class definition. //As your function definition money does not include any number variable i am assuming it to be part of class. #include using namespace std; class Program { private: double number; public: Program() { number = 0; } Program(int number) { this->number = number; } double money() { return 2*number; } }; int main() { Program p(10); cout << p.money() << endl; return 0; }.

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For each of the following descriptions indicate which best describes proteins or protein sequences that are: (S) similar; (H) homolgous; (O) orthologous; (P) paralogs; (D) domains; (F) a superfamily ____ sequences that have a shared evolutionary ancestry ____ sequences that have a certain statistically significant % of identical amino acids when aligned ____ proteins that have a very high % of identical amino acids when aligned and which are found in the same Organism ____ sequences that are small but share structural and functional similarity ____ sequences that have a shared ancestral sequence that changed during a speciation event A given protein has been monoubiquitylated. What is the expected result? a. the protein will be activated to turn on transcription b. the subcellular localization of the protein will change c. the protein will be activated to repair the DNA d. the protein will be activated to phosphorylate a substrate e. any of the above f. none of the above The synthetic toxin 2,4-dinitrophenol can uncouple ATP synthesis from mitochondrial respiration by decreasing the permeability of the inner membrane to protons. What would be the effect of dinitrophenol treatment on the amount of ATP produced by mitochondria and on the rate of ATP transport across the inner membrane, respectively? a. positive, positive b. positive, negative c. negative, positive d. negative, negative Which of the following requires the mitochondria to create contact points with the ER? a. mt fission b. mt fusion c. mt biogenesis of more mitochondria d. autophagy of mitochondria (Mitophagy) e. apoptosis Solution S = proteins that have a very high % of identical amino acids when aligned and which are found in the same Organism H = sequences that have a shared evolutionary ancestry O = sequences that have a shared ancestral sequence that changed during a speciation event P = sequences that are small but share structural and functional similarity D = Discription not mentioned in the question (A domain is a well-structured 3D, independent and fully functional part of a protein. Mostly various domains combine to form a proetin to execute a specific function in cells e.g. enzymes) F = sequences that have a certain statistically significant % of identical amino acids when aligned.

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connellalykshamesb60

Explain how an Annelidian differs from a Molluscan? Solution Mollusks are known to very diverse including 110,000 named species and some examples are clams, oysters, snails, octopi etc. These mollusks are known to have distant common ancestor with the annelid worms (trochophore larva) and it has been believed that both mollusks and annelids most probably might have evolved from free-living flatworms. The main difference between mollusks and annelids are Only one heart is seen in Mollusca, while Annelids have five hearts Open circulatory system is found in Mollusca can have open circulatory system but annelids have closed circulatory system Mollusks are marine creatures while Nematoda and Annelids are known to inhabit various ecologies, marine (tidal zone and hydrothermal vents), fresh water and terrestrial. Mollusks have a more complex system when compared to annelids Either externally or internally we can spot shells in Mollusks (snails, scallops, and squids), but shells are absent in Annelids..

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DNA s composed of nucleotides that are joined together by covalent bonds between which two parts of each nucleotide? Between two sugars Between the sugar and the organic base. Between the sugar and the phosphate group. Between the phosphate group and the organic base. Solution DNA is composed of nucleotides that are joined together by covalent bonds between which wo parts of each nucleotide: Betweeen the sugar and phosphate group.......................

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Discuss some of the challenges involved in ensuring that critical knowledge is transferred both to present-day employees as well as future ones. (1 ~ 2 Paragraphs) Solution The challenges involved in ensuring both present and future employees are of many kinds. Ensuring critical knowledge, the main is to provide security . Providing the right level of security is the main part and shouldnot access from other systems. Employees come from different places , cultures, and habits making them united in the office for working together can be a challenge. The next comes, keeping up with technology , in which the knowledge could be shared to others as easy and faster.Constant changing of the structures mean learning how to be smart and quick. Interpretation effectively is that acquiring the correct and valuable information with in time which can be used by other departments. Here comes the, last main one i.e., impressing the person who works actively and effectively . By doing these kind of works not only the purticular employee but also other persons can be given a way for encouraing the work . To overcome the knowledge challenge facilities , can be shared by data bases and technological aids. Knowledge management contributes towards streamlining the ideas problems, projects and deployment driving towards productivity. But, it’s more than just knowing everything . It’s creating a synthesis between the people and the information to the point that the whole is more than the sum of the parts..

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Biologically, the term is synonymous with [Choose the term race. refers to the position of a particular gene Choose on a chromosome. Traits that provide a benefit in particular [Choose environments typically create when their prevalence within a population is mapped onto the landscape. If two different alleles phenotypically result in a trait [Choose J that appears to be blended, the alleles are said to exhibit can lead to speciation events. Choose s one of the four fields of anthropology. Choose The structure of DNA was first discovered by [Choose Francis Crick, Rosalind Franklin, and A type blood and B type blood are Both Choose appear in the phenotype if they are in the genotype. states that only one of the two alleles (choose l present in the parent will be present in the gamete produced by that parent. Solution 1. Clines 2. Locus 3. Subspecies 4. Incomplete dominance 5. Disruptive selection 6. Linguistics 7. James Watson 8. Codominant 9. Law of segregation.

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Anyone good with linguistics? Are the following headlines transitive or intransitive? \"Clinton Says Inaction By Russia May Lead to Syrian Civil War\" \"Russian Church Is a Strong Voice In Opposing Intervention in Syria\" \"Putin Reject Intervention But Fears Civil War In Syria\" \"Syria: Heavy Clashes Reported\" \"Syria Bars 17 Western Diplomats and Allows Increased Aid Agency Presence\" Solution Let us look at the dictionary meaning of transitive and intransitive. Transitive verb 1. to lead astray or deceive; especially : SEDUCE 2 : to deliver to an enemy by treachery 3 : to fail or desert especially in time of need 4 a : to reveal unintentionally b : SHOW, INDICATE c : to disclose in violation of confidence intransitive verb : to prove false. Intransitive verb is to practice deceit; also : to give a false impression Looking at the headlines \"Clinton Says Inaction By Russia May Lead to Syrian Civil War\" - TRANSITIVE \"Russian Church Is a Strong Voice In Opposing Intervention in Syria\" - INTRANSITIVE \"Putin Reject Intervention But Fears Civil War In Syria\" - TRANSISITVE \"Syria: Heavy Clashes Reported\" - INTRANSITIVE \"Syria Bars 17 Western Diplomats and Allows Increased Aid Agency Presence\" - TRANSITIVE.

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A mother and father both have normal karyotypes. The father is color blind, but the mother is not. Color blindness is determined by a recessive mutation on the X chromosome. Their first child is a color-blind girl with an XX karyotype. The family consults a genetic counselor because their second child is a color blind boy with Klinefelter\'s syndrome. Klinefelter\'s syndrome results when a child has the sex chromosome constitution XXY. Which of the following statements is true about the nondisjunction event that led to the boy with Klinefelter\'s syndrome (assume no recombination)? Only during the first meiotic division in Dad. Only during the second meiotic division in Dad. Only during the first meiotic division in Mom. Only during the second meiotic division in Mom. Either a or d. Either a orb. Solution ans-e Non-disjunction (failure of homologous chromosomes) at paternal meiosis I produces XY secondary spermatocytes and a 24,XY gamete. Fertilization with a 23,X ovum produce a 47,XXY individual (Klinefelter syndrome). Only nondisjunction at paternal meiosis II produces a 24,YY gamete that yields a 47,XYY individual after fertilization..

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A man has a condition where all of his gametes undergo nondisjunction of the sex chromosomes in meiosis I, but meiosis II proceeds normally. He mates with a woman who produces all normal gametes. What is the probability that the fertilized egg will develop into a child with Klinefelter syndrome (XXY)? Assume that all gametes and zygotes are viable. 1/8 1/4 1/3 1/2 0 1/8 1/4 1/3 1/2 0 Solution Answer: 1/2 Nondisjunction occurs when homologous chromosomes, in this case the X and Y or two X sex chromosomes, fail to separate, producing a sperm with an X and a Y chromosome. If the man has nondisjunction of all of his sperms (at meiosis1), then 50% or ½ of the sperms are XY. Therefore probability of child with Klinefelter syndrome (XXY) will be 1/2 ==.

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____ The pigment produced by S. marvel scenes would appear first on the edge of colony because these bacteria reach stationary phase more quickly than those in the middle. ____ Typhoid Mary was considered to have an acute infection with the organism that causes tuberculosis; her gall bladder, where bile is made, contained the organism. Solution 1. True, this organism produce red pigmentation peviously this organism was considered as non pathogenic organism but now some harmfull activity are also known 2.True, the tuberculosis in the abdominal part is most common type of extra pulmonary tuberculosis.

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Write the advantages of using JavaFX with compare to Swing and AWT. Solution The advantages of using java fx with compared to swing and awt are: 1.The first advantage is that java fx works similarly to a pdf.The java fx is basically a tree/node struction which has various values that are inherited from the nodes and the swing is basically iterative and has a flat structure .The awt is similar to swing as well.The PDF is built around a tree structures which makes it easier to map onto JavaFx as compared to swing.It can also handle xforms. 2.The second advantage is that JavaFx has more features as compared to swing and awt.For example in order to create the shapes it is easier using javafx with variable line as compared to swings. 3.The third advantage is JavaFx uses a more compact and a simpler code.The code is short as compared to swing.JavaFx takes low level tedium out of the code which means we do not have to implement paint() and print() methods in javafx which we have to do in swing. 4.It is an integral part of java8 and a lot of focus is going on to make it compatible and run on android devices and rasberry pi operating systems.It can also interact with the existign swing applications.It can be run on various devices. 5.The new developments in java will take place in javafx and it will make it user friendly with easier coding..

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Why do silver nanoparticles of 10 nanometers in diameter have lower melting temperature than the same silver but in the form of a 1/4 inch rod? Solution Firstly in case of spherical there is low volume to surface area so it has high heat absorbing capacity so low melting point but in case of cylindrical surface to volume ratio is quite large Secondly in case of spherical nanoparticle browniam motion is very high because of which high heat transfer coeeficient is achieved and so low melting point in case of nanoparticle.

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Which of the following statements is not true about facilitated diffusion? a. It requires specific transport molecules in the plasma membrane. b. A transporter protein undergoes a change in shape to accomplish the transfer. c.A substrate molecule is transported from an area of high concentration to low concentration. d. It requires ATP. e. It is driven by osmotic pressure. Solution B. A transporter protein undergoes a change in shape to accomplish the transfer. Facilitated diffusion is the process of spontaneous passive transport of molecules or ions across a cell\'s membrane via specific transmembrane integral proteins. Larger molecules are transported by transmembrane carrier proteins, such as permeases, that change their conformation as the molecules are carried across (e.g. glucose or amino acids)..

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Which is not a hypothesis for the origin of viruses?They originated in plasmids and transposable elements.They originated in symbiotic bacteria.They originated with the origin of life.They originated from cell membrane proteins. Solution Anwer: They originated from cell membrane proteins Reason: Viruses might have not originated from cell membrane proteins because according virus-first hypothesis enzyme that synthesizes cell wall or cell membrane may generated a virus first. The other hypothesis are that viruses might have originated in plasmids and transposable elements (progressive hypothesis of viral evolution) or originated in symbiotic bacteria or originated with the origin of life..

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