Permeability Reports Samples For Students

Introduction

Selective permeability is a function and a feature of the cell membrane, which is crucial to regulate homeostasis. According to Turksen (132), the plasma membrane function by controlling specific passing of some substances and at the same time hinders entry of some substances into the cell. As high school students, we were curious of a cell membrane could do this function. We, therefore, performed an experiment to test how a chicken eggshell membrane could allow some substances to pass through it while hinders the passage of some substances. We dissolved the eggshell in vinegar. After a thorough reading, the book by Turksen (143), we ...

Executive summary

This experiment seeks to compute the overall mass transfer coefficients for nitrogen gas and oxygen gas via a polymer membrane under different experimental conditions. The calculation of the overall mass transfer coefficient of the gasses will aid in establishing how the permeability of the polymer membrane is affected by altering these conditions. The experiment employs the calculation of the separation factor in determining the efficiency of a membrane in separating oxygen gas from nitrogen gas. It uses the measured values of flow rates, exit streams and flow rate composition of the membrane component to calculate the mass transfer coefficients. ...

Introduction

Osmosis refers to the net water movement across a membrane, which is selectively permeable and the movement is driven by a difference in the concentration of the solutes on the opposite sides of the membrane. A selectively permeable membrane allows water to pass through without allowing ions or solute molecules to pass through. Other small molecules that are not charged are also allowed to pass through the membrane. Diffusion, on the other hand, refers to the movement of molecules in a random motion as a result of the kinetic energy and causes the molecules to have a net movement from areas where the particles ...

Abstract

Application of the nanofiltration (NF) and ultrafiltration (UF) processes is applied in the handling of water that is produced raw. The application has been investigated in the current day through various studies (Wang 14). The experiment of the processes of both nanofiltration and ultrafiltration is conducted in the laboratory unit which is operated in a pattern of cross flow (Ashaghi, Ebrahimi, & Czermak, 46). The study that was conducted in Oilfield of North Sea using the process of membranes of ultrafiltration (UF) and microfiltration (MF) indicated that the content of hydrocarbon decreased from 50 mg/l to 2 mg/l which recorded ...

Introduction

The cell membrane encloses the cell contents and regulates what gets in and out of the cell. This property of a cell is referred to as selective permeability and helps in maintaining life processes (Beckett 22). The property enables physiological process such as diffusion and osmosis to proceed.
Diffusion is the movement of particles from a region of high concentration to a region of low concentration (Roberts and Mitchelmore 38). In a cell membrane, the molecules will diffuse from the side where the molecules are more to a region where they are less. Because of selective permeability, only molecules ...

Glade Bender JL, Lee A, Reid JM, Baruchel S, Roberts T, Voss SD, Wu B, Ahern CH, Ingle AM, Harris P, Weigel BJ, Blaney SM. Phase I pharmacokinetic and pharmacodynamic study of pazopanib in children with soft tissue sarcoma and other refractory solid tumors: a children's oncology group phase I consortium report. J Clin Oncol. 2013 Aug 20;31(24):3034-43.

This study describes a phase I clinical trial of “Pazopanib” in pediatric patients suffering from soft tissue sarcoma (STS). Pazonapib is an anti-angiogenic drug. It is a competitive inhibitor of ATP molecule1,2. It competes with the ‘substrate’ ...

Lab Partner’s Name(s)

TA’s Name
Abstract
The permeability of free space is an important physical constant when dealing with electromagnetic theory in physics. By carrying out this lab experiment knowledge about procedure to find this physical constant was gained. During this experiment several safety issues as well as various careful measures were taken as group members were dealing with current and sensitive balancing device.

Objectives

Purpose of this experiment was to calculate an experimental value for μ0, the permeability of free space after balancing repulsive magnetic force between two wires with antiparallel currents by utilizing a known gravitational ...