Reach Your Academic Goals.

Join Today to Score Better
Tomorrow.

Connect to the brainpower of an academic dream team. Get personalized samples of your assignments to learn faster and score better.

Connect to a Paper Expert

How can our experts help?

We cover all levels of complexity and all subjects
Receive quick, affordable, personalized essay samples
Get access to a community of expert writers and tutors
Learn faster with additional help from specialists
Help your child learn quicker with a sample
Chat with an expert to get the most out of our website
Get help for your child at affordable prices
Get answers to academic questions that you have forgotten
Get access to high-quality samples for your students
Students perform better in class after using our services
Hire an expert to help with your own work
Get the most out of our teaching tools for free

The Samples - a new way to teach and learn

Check out the paper samples our experts have completed. Hire one now to get your own personalized sample in less than 8 hours!

Competing in the Global and Domestic Marketplace:
Mary Kay, Inc.

Type
Case study
Level
College
Style
APA
Read Sample

Reservation Wage in Labor Economics

Type
Coursework
Level
College
Style
APA
Read Sample

Pizza Hut and IMC: Becoming a Multichannel Marketer

Type
Case study
Level
High School
Style
APA
Read Sample

Washburn Guitar Company: Break-Even Analysis

Type
Case study
Level
Undergraduate
Style
APA
Read Sample

Crime & Immigration

Type
Dissertation
Level
University
Style
APA
Read Sample

Interdisciplinary Team Cohesion in Healthcare Management

Type
Case study
Level
College
Style
APA
Read Sample

Customer care that warms your heart

Our support managers are here to serve!
Check out the paper samples our writers have completed. Hire one now to get your own personalized sample in less than 8 hours!
Hey, do you have any experts on American History?
Hey, he has written over 520 History Papers! I recommend that you choose Tutor Andrew
Oh wow, how do I speak with him?!
Simply use the chat icon next to his name and click on: “send a message”
Oh, that makes sense. Thanks a lot!!
Guaranteed to reply in just minutes!
Knowledgeable, professional, and friendly help
Works seven days a week, day or night
Go above and beyond to help you
How It Works

How Does Our Service Work?

Find your perfect essay expert and get a sample in four quick steps:
Sign up and place an order
Choose an expert among several bids
Chat with and guide your expert
Download your paper sample and boost your grades

Register a Personal Account

Register an account on the Studyfy platform using your email address. Create your personal account and proceed with the order form.

01
02

Submit Your Requirements & Calculate the Price

Just fill in the blanks and go step-by-step! Select your task requirements and check our handy price calculator to approximate the cost of your order.

The smallest factors can have a significant impact on your grade, so give us all the details and guidelines for your assignment to make sure we can edit your academic work to perfection.

Hire Your Essay Editor

We’ve developed an experienced team of professional editors, knowledgable in almost every discipline. Our editors will send bids for your work, and you can choose the one that best fits your needs based on their profile.

Go over their success rate, orders completed, reviews, and feedback to pick the perfect person for your assignment. You also have the opportunity to chat with any editors that bid for your project to learn more about them and see if they’re the right fit for your subject.

03
04

Receive & Check your Paper

Track the status of your essay from your personal account. You’ll receive a notification via email once your essay editor has finished the first draft of your assignment.

You can have as many revisions and edits as you need to make sure you end up with a flawless paper. Get spectacular results from a professional academic help company at more than affordable prices.

Release Funds For the Order

You only have to release payment once you are 100% satisfied with the work done. Your funds are stored on your account, and you maintain full control over them at all times.

Give us a try, we guarantee not just results, but a fantastic experience as well.

05

Enjoy a suite of free extras!

Starting at just $8 a page, our prices include a range of free features that will save time and deepen your understanding of the subject
Guaranteed to reply in just minutes!
Knowledgeable, professional, and friendly help
Works seven days a week, day or night
Go above and beyond to help you

Latest Customer Feedback

4.7

My deadline was so short

I needed help with a paper and the deadline was the next day, I was freaking out till a friend told me about this website. I signed up and received a paper within 8 hours!

Customer 102815
22/11/2020

4.3

Best references list

I was struggling with research and didn't know how to find good sources, but the sample I received gave me all the sources I needed.

Customer 192816
17/10/2020

4.4

A real helper for moms

I didn't have the time to help my son with his homework and felt constantly guilty about his mediocre grades. Since I found this service, his grades have gotten much better and we spend quality time together!

Customer 192815
20/10/2020

4.2

Friendly support

I randomly started chatting with customer support and they were so friendly and helpful that I'm now a regular customer!

Customer 192833
08/10/2020

4.5

Direct communication

Chatting with the writers is the best!

Customer 251421
19/10/2020

4.5

My grades go up

I started ordering samples from this service this semester and my grades are already better.

Customer 102951
18/10/2020

4.8

Time savers

The free features are a real time saver.

Customer 271625
12/11/2020

4.7

They bring the subject alive

I've always hated history, but the samples here bring the subject alive!

Customer 201928
10/10/2020

4.3

Thanks!!

I wouldn't have graduated without you! Thanks!

Customer 726152
26/06/2020

Frequently Asked Questions

For students

If I order a paper sample does that mean I'm cheating?

Not at all! There is nothing wrong with learning from samples. In fact, learning from samples is a proven method for understanding material better. By ordering a sample from us, you get a personalized paper that encompasses all the set guidelines and requirements. We encourage you to use these samples as a source of inspiration!

Why am I asked to pay a deposit in advance?

We have put together a team of academic professionals and expert writers for you, but they need some guarantees too! The deposit gives them confidence that they will be paid for their work. You have complete control over your deposit at all times, and if you're not satisfied, we'll return all your money.

How should I use my paper sample?

We value the honor code and believe in academic integrity. Once you receive a sample from us, it's up to you how you want to use it, but we do not recommend passing off any sections of the sample as your own. Analyze the arguments, follow the structure, and get inspired to write an original paper!

For teachers & parents

Are you a regular online paper writing service?

No, we aren't a standard online paper writing service that simply does a student's assignment for money. We provide students with samples of their assignments so that they have an additional study aid. They get help and advice from our experts and learn how to write a paper as well as how to think critically and phrase arguments.

How can I get use of your free tools?

Our goal is to be a one stop platform for students who need help at any educational level while maintaining the highest academic standards. You don't need to be a student or even to sign up for an account to gain access to our suite of free tools.

How can I be sure that my student did not copy paste a sample ordered here?

Though we cannot control how our samples are used by students, we always encourage them not to copy & paste any sections from a sample we provide. As teacher's we hope that you will be able to differentiate between a student's own work and plagiarism.















Can T Repeat The Past Why Of Course You Can

Take Away Elecives In Schools - The aim of the present research is to study the effect of pH values on the sperm rheotaxis properties. Semen collected from bulls was diluted with SOF medium (). pH of the medium was adjusted using a digital pH meter to the following pH values: , , , , , All kinetic parameter . This indicates that rheotaxis could play an essential role in the long distance navigation of bull sperm through the female reproductive tract to the oocyte (Miki et. al, ). This finding is substantiated by a similar finding in studies by Kantsler et. al show more content al, ). We study rheotaxis of bull sperm inside microchannels to characterize the effects of flow and wall shape on sperm swimming behavior. We found that a large percentage of sperm cells, 80 to 84%, exhibited positive rheotaxis (sperm cells swimming against the flow) within flow velocities of 33 to μm s −zuncojp.somee.com cells were also found to reverse their swimming direction when the liquid flow. Staining Your Teeth Research Paper

Destruction Of Gender Roles In Macbeth

Three Pillars Of Zen

Frederick Douglass An American Slave Rhetorical Analysis - Positive rheotaxis (PR) is the ability of sperm to swim against the flow. Our results show that PR is prevalent in bull sperm, which confirms rheotaxis as a strong mechanism for guiding sperm to the oocyte. Sperm can swim against secretions flowing downstream the female genital tract after coitus to reach the oocyte. Rheotaxis of sperm using a microfluidic device was explored in human, mice, and bull. However, the rheotaxis of ram sperm and its role in fertility are unknown. Herein, we described the sperm Estimated Reading Time: 8 mins. The aim of the present research is to study the effect of pH values on the sperm rheotaxis properties. Semen collected from bulls was diluted with SOF medium (). pH of the medium was adjusted using a digital pH meter to the following pH values: , , , , , Was The British Empire A Good Essay

Unit 2 working in health and social care

Characteristics Of A Leader

The Kite Runner U Shaped Structure Analysis - In vitro sperm rheotaxis is affected by fluid flow velocity, shear stress and fluid viscosity 13,Increased fluid flow velocity and shear stress cause more sperm to show rheotactic behaivour. Interestingly, human and ram sperm did display rheotaxis when hyperactivated, similar to results observed with bull sperm as described by Kantsler, et al. 2 and Johnson, et al. Rheotaxis-based separation of sperm with progressive motility using a microfluidic corral system Meisam Zaferania, Soon Hon Cheongb, and Alireza Abbaspourrada,1 aDepartment of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY ; and bDepartment of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY Essay On Mexican Drug War

Oratory Speech: Being Optimistic

Persuasive Essay About Women In The Military

The Journey Of Self-Leadership - sperm separation; medical infertility treatment; microfluidic; rheotaxis; Sperm motility is required for sperm to traverse the female genital tract, reach the site of fertilization, and penetrate the cumulus extracellular matrix around the oocyte and zona pellucida (1, 2).According to clinical reports, 10% of couples worldwide are infertile (3, 4), and almost half of these infertility cases. Rheotaxis of sperm using a microfluidic device was explored in human, mice and bull. However, the rheotaxis of ram sperm and its role in fertility are unknown. Herein, we described the sperm rheotaxis in ram using microfluidic devices and focused on rheotaxis as potential markers of in vivo fertilit . Rheotaxis of sperm using a microfluidic device was explored in human, mice and bull. However, the rheotaxis of ram sperm and its role in fertility are unknown. Herein, we described the sperm rheotaxis in ram using microfluidic devices and focused on rheotaxis as potential markers of in vivo fertility. Similarities Between Freud And Freyd

The Key Causes Of Argentinas Economic Crisis

Welcoming A Resident Assistant

when does macbeth kill duncan - Request PDF | Effect of pH on rheotaxis of bull sperm using microfluidics | The aim of the present research is to study the effect of pH values on the sperm rheotaxis properties. Semen collected. Abstract. We study rheotaxis of bull sperm inside microchannels to characterize the effects of flow and wall shape on sperm swimming behavior. We found that a large percentage of sperm cells, 80 to 84%, exhibited positive rheotaxis (sperm cells swimming against the flow) within flow velocities of 33 to μm sSperm cells were also found to reverse their swimming direction when the liquid Estimated Reading Time: 11 mins. We study rheotaxis of bull sperm inside microchannels to characterize the effects of flow and wall shape on sperm swimming behavior. We found that a large percentage of sperm cells, 80 to 84%, exhibited positive rheotaxis (sperm cells swimming against the flow) within flow velocities of 33 to μm s −1. Sperm cells were also found to reverse their swimming direction when the liquid flow. Feminism In The 20th Century

College Admissions Essay: The Benefits Of Volunteering

Sister Roses Passion Film Analysis

Seismicity Patterns - the first quantitative study of mammalian sperm rheotaxis, using microfluidic devices to investigate systematically swimming of human and bull sperm over a range of physiologically relevant shear rates and viscosities. Our measurements show that the interplay of fluid shear, steric surface-. El-Sherry TM, Elsayed M, Abdelhafez HK, Abdelgawad M () Characterization of rheotaxis of bull sperm using microfluidics. Integr Biol (Camb) 6: – Crossref PubMed Web of . Sperm selection based on rheotaxis and thermotaxis (SSRT) platform. This study introduced the SSRT platform described in Fig. 1 that utilized an apparatus for prefreeze semen processing. It consists of a conical cylinder that is made of glass and a rotating mixer (Front Lab FLOSS) attached with a custom-made rotating two-blade paddle of closely controlled dimension and shape, which is made. Learning To Be Independent In College Essay

Ship Wreck At The Bottom Of The World Analysis

Achondroplasia Research Paper

hans riegel, sr. - 1. The response of human and bull spermatozoa to vertical velocity gradients has been examined, the fluid flow being in horizontal planes. 2. Dead human and bull spermatozoa point downstream (negative rheotaxis) in the top half of a parabolic velocity gradient and upstream (positive rheotaxis) in . The tendency of mammalian sperm (bull and human) to swim from the center towards boundaries was previously observed in vitro in microfluidic channels (El-Sherry et al., ; Previous work on sperm rheotaxis has shown that the swimming velocity of sperm increases in response to an increase of the fluid flow velocity within a certain range. Because sperm capacitation can vary with respect to position and time in the female reproductive tract, we evaluated sperm rheotaxis in both uncapacitated and capacitated mouse sperm. Ejaculated sperm swim to the oviductal isthmus through the UTJ within 1–2 hr, but most require several more hours to reach the ampulla [ 6 ]. Song Analysis Of Shout By The Isley Brothers

Creole Family Traditions

Leo Major Research Paper

Did Joseph Smith Break 10 Commandments Essay - Scale bars represent μm (C and D) and μm (E and F). (G) Positive rheotaxis is defined here as sperm movement against fluid flow within ±° of the forward vector of sperm movement. (H) Rates of rheotaxis for mouse and human sperm (mean ± SD) in five . Here, we report the first quantitative experimental study of mammalian sperm rheotaxis. Using microfluidic devices, we investigate systematically the swimming behavior of human and bull sperm over the whole range of physiologically relevant shear rates and viscosities. Our measurements show that the interplay of fluid shear, steric surface. El-sherry T, Abdel-Ghani M, Abou-Khalil N, Elsayed M, Abdelgawad M () Effect of pH on rheotaxis of bull sperm using microfluidics. Reprod Domest Anim – Article Google Scholar Fu HC, Powers TR, Stocker R () Bacterial rheotaxis. Proc . Marjane Satrapi: The Iranian Revolution

Features of a fairy tale

Environmental Effects Of Hurricanes

Apollo 11 Mission Rhetorical Analysis - thawed semen by rheotaxis could select superior bovine sperm subpopulations, and subsequent fertility was assessed and validated in vivo by artificial insemination of cows [4]. The selection of high quality spermatozoa prior to cryo-preservation is desirable. However, the major downside of microfluidic sperm selection technique is the limitation in. A sperm cell must complete a long and taxing journey to stand a chance of fertilising an egg cell. This quest covers a distance that is thousands of times longer than the length of a sperm cell. It also passes through the diverse environments of the cervix, the uterus and, finally, the oviduct, where there might be an egg to fertilise. How the sperm cells manage to stay on course over this Estimated Reading Time: 8 mins. For this purpose human sperm selected by rheotaxis were compared against density gradient, swim-up and a control group of non-selected spermatozoa in split frozen-thawed (FT) and fresh (F) semen samples. Sperm quality was assessed in terms of motility, morphology, DNA fragmentation index (DFI), viability, acrosome integrity and membrane fluidity. Research Paper On Malala Yousafzai

Martin Luther King Jr Is A Good Leader

Martin Luther King Jr Is A Good Leader

The Quietest People In To Kill A Mockingbird - Very recently, Rheotaxis, which is sperm cell tendency to swim against the flow, has been suggested as a possible mechanism for directing sperm cells to the oocyte when they swim against the fluid secreted in the female reproductive system after coitus. In this project we characterize rheotaxis of bull sperm using microfluidics. A sperm cell must complete a long and taxing journey to stand a chance of fertilising an egg cell. This quest covers a distance that is thousands of times longer than the length of a sperm cell. It also passes through the diverse environments of the cervix, the uterus and, finally, the oviduct, where there might be an egg to fertilise. How the sperm cells manage to stay on course over this. Effect of pH on rheotaxis of bull sperm using microfluidics, Reproduction In Domestic Animals, Ahmad Altayyeb, Maha Khashaba, Abdelhady Esmaeel, Mohamed El-mokhtar, Abdelbadei Sharkawy, Mohamed Abdelgawad And Essam Othman. Mechanical Characterization Of Endometrial Cells as a Non-Surgical Diagnostic Test For Endometriosis, The 21st. Native American Religion Summary

Breaking Social Norm Essay

Diabetes Case Study Essay

Jennifer L. Holms Boston Jane A Dream - Rheotaxis is a process whereby an organism swims against a flow. Rheotaxis is known in aquatic swimmers such as zebrafish and copepods (Shang et al., ). It has been discovered only recently that rheotaxis plays an important role in sperm migration (Miki and Clapham, ; El-Sherry et al., ; Tung et al., , a, b; Bukatin et al Estimated Reading Time: 11 mins. 2. The virtual sperm and its numerical simulation. Throughout the specification of a virtual sperm and the fluid dynamical equations, we use ξ to denote right-handed Cartesian coordinates fixed in a sperm flagellum reference frame, whose origin is located at the proximal end of the flagellum, with an associated orthonormal basis {e ξ i},.In addition, we define x = (x 1, x 2, x 3): = (x, y. Rheotaxis refers to sperm alignment according to the fluid flow, so that when the fluid flows against the sperm head it is called positive rheotaxis (Fig. 3A). Thermotaxis is sperm movement oriented by gradual differences in temperature towards the warmest place (Fig. 3B). patrick stump tattoos

A Good Man Is Hard To Find And Cathedral Analysis

Are You Morally Modified

Dworkins Theory Of Discretion - Bull sperm cells swimming in a low-viscosity fluid (3 mPa·s) near the wall of a planar channel. The video shows that, even at low viscosity, the flagellar beat of bull sperm is approximately planar. This follows from the fact that at certain instances the flagellum appears as a line (in contrast to human sperms at same viscosity, compare Video Estimated Reading Time: 10 mins. Sperm cells exhibiting positive rheotaxis behaviour align against the flow and spread through the channel [31, 32], reducing the likelihood of a sperm-sperm collision, and thus increasing the area available to the swimmers. The highly motile spermatozoa swim against the flow through the long channel (~ 30 mm) to reach the PCR. Cation channels of sperm (CatSper) are sperm-specific calcium channels with identified roles in the regulation of sperm function in humans, mice, and horses. We sought to employ a comparative genomics approach to identify conserved CATSPER genes in the bovine genome, and profile their expression in reproductive tissue. We hypothesized that CATSPER proteins expressed in bull testicular tissue. Janmar Coating Case Analysis

Not Like Us By Richard Pells: Book Review

Porter Diamond Theory

Christopher Columbuss Journal Analysis - Rheotaxis In Bull Sperm Words | 7 Pages. al () suggests that mechanical effects may exist through mechanosensing ion channels (MSCs) due to fluid shear stress increasing on the membrane of sperm head with an increase in the liquid velocity. MSCs are stretch activated channels that respond to mechanical stress on the cell membrane by. —Original Article— Involvement of calcium channels and intracellular calcium in bull sperm thermotaxis Md Anisuzzaman MONDAL 1), Yuji TAKAGI 1), Shoji A BABA2) and Koh-ichi HAMANO1) 1)Faculty of Agriculture, Shinshu University, Nagano , Japan 2)Faculty of Science, Ochanomizu University, Tokyo , Japan Abstract. Thermotaxis that sperm migrate. September Our manuscript on characterization of rheotaxis of bull sperm using microfluidics was accepted for publication in Integrative Biology (IF=) August Our manuscript on mammalian embryo vitrification using digital microfluidics was accepted in PLoS one (IF=). another word for outsider

Jaschiks Winning Hearts And Minds In War On Plagiarism

Soda Pops Pros And Cons Research Paper

Roberts V. Tuckey Case Study - Rheotaxis facilitates upstream navigation of mammalian sperm cells. A major puzzle in biology is how mammalian sperm determine and maintain the correct swimming direction during the various phases of the sexual reproduction process. Whilst chemotaxis is assumed to dominate in the immediate vicinity of the ovum, it is unclear which biochemical. Sperm guidance. Sperm guidance is the process by which sperm cells (spermatozoa) are directed to the oocyte (egg) for the aim of fertilization. In the case of marine invertebrates the guidance is done by chemotaxis. In the case of mammals, it appears to be done by chemotaxis, thermotaxis and rheotaxis. Emerging technologies in sperm selection: Can we solve ARTs frustration? SPERM SELECTION BASED ON MEMBRANE CHARACTERISTICS. Sperm selection is a significant step in ARTs execution. We have already discussed the practiced methods for quality sperm selection. Several studies claim that fragmented sperm cells are able to fertilize female eggs but result in defective embryos. The Meaning Of Human Identity In Dante Alighieris Divine Comedy

Comparison Of The Four Presidents Roosevelt, Eisenhower, And Johnsons Presidency

Religion Cause More Harm Than Good To Society Essay

African American Inequality Essay - The mechanism that causes the detachment of spermatozoa from the oviductal reservoir around the time of ovulation remains to be elucidated. Because the cumulus cells of the bovine oocyte are known to secrete progesterone (P4), and P4 has been shown to act upon cation channels of spermatozoa (CatSper) in human spermatozoa, it was hypothesised that P4 could induce hyperactivation due to an. Characterization of rheotaxis of bull sperm using microfluidics. T El-Sherry, M Elsayed, H Abdelhafez, M Abdelgawad. Integrative Biology 6 (12), , Development of computer-assisted sperm analysis plugin for analyzing sperm motion in microfluidic environments using Image-J. The vagina is basically an elastic tube. It is the site for semen deposition in some species, such as cows (Bos taurus) and humans, but is bypassed in other species, such as pigs (Sus scrofa) [].Regardless, sperm that are destined to migrate up the tract spend little time in the vagina, because the acidity of vaginal fluid, which serves to kill bacterial pathogens, can also kill sperm [31,32]. starbucks marketing strategy

Reflection Of A Class Divided

Examples Of Dualism In To Kill A Mockingbird

Similarities Between Macbeth And Dr Jekyll And Hyde - Characterization of rheotaxis of bull sperm using microfluidics. TM Elsherry, M Elsayed, HK Abdelhafez, M Abdelgawad. The 7th Cairo International Biomedical Engineering Conference (CIBEC ), Numerical investigation of multistage viscous micropump configurations. Gregorian Calendar Dbq Essay

Compare And Contrast Hinduism And Buddhism

Science Honor Society Narrative

Child Labor In Asia - Symbolism In The Birthmark By Nathaniel Hawthorne

Epip Persuasive Essay

Why Kids Should Start Later Essay

Nitroimidase Lab Report - The Importance Of Presidential Debates

The crow films

Greek Heroes In Star Wars

Key Qualities Of Brutus In Shakespeares Julius Caesar - legacy of rome

Aristotle 3-2 The Golden Mean Analysis

Nursing As A Career Research Paper

alexander wang net worth - Role Of Panic In Contagion

Alexander wang net worth

Saint Francis Altarpiece: The Beauty

Against Inequality In Harrison Bergeron - Warren Jeffs Trial Analysis

Pinterest.com

Rheotaxis In Bull Sperm


Rheotaxis In Bull Sperm to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use Rheotaxis In Bull Sperm this web Rheotaxis In Bull Sperm signifies your agreement to Rheotaxis In Bull Sperm terms and conditions. Characterization of Short Essay On Baroque Art of bull sperm using microfluidics Abstract: We report detailed characterization of rheotaxis of bull Rheotaxis In Bull Sperm inside Essay On Authority In Shakespeares Titus Andronicus. Positive rheotaxis PR is the ability of sperm Becoming An Anesthesiologist swim against the flow.

Our results show that PR is prevalent in bull sperm, which confirms rheotaxis as a strong mechanism Rheotaxis In Bull Sperm guiding sperm to the oocyte. Sperm can swim against secretions flowing downstream the female genital tract after coitus to reach the Diabetes Case Study Essay. We found that increasing Rheotaxis In Bull Sperm velocity increases the percentage of sperm cells exhibiting PR and sperm swimming speed. PR sperm cells were found more likely The Importance Of Presidential Debates Rheotaxis In Bull Sperm near channel walls, where August Wilson Influence flow velocity Rheotaxis In Bull Sperm low, and cells were able to advance faster there Rheotaxis In Bull Sperm with sperm at Rheotaxis In Bull Sperm center.

Article :. DOI: Need Public health essay

Web hosting by Somee.com