Cultural Diffusion in Anthropology
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Diffusion generally refers to the transplanting of cultural aspects from one group to another. That is, the music, political ideologies, fashion, and any variety of items/beliefs/cultural identities appeal cross from one group to another. While some may consider this a profound concept, the reality is that cultural diffusion is not something that is new and has existed for many centuries. In many cases, diffusion is benign and rooted in popular culture and a desire to experience of discover something new.…...
Diffusion of New Products in Social Networks
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Consumers' increasing distrust in traditional advertising (Chalmers, 2017; Lee, 2012) has led them to rely more on reviews from prior buyers connected with them in social networks to learn about new products' characteristics. This consumers' new reliance on social networks has encouraged researchers to i) include consumer-level interactions in social networks to study new products' life-cycle, and ii) exploit information about how consumers are connected in a network to design marketing strategies for new products.Early literature on diffusion of new…...
A Jump-Diffusion Model for Asset Pricing
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Pricing options and other derivatives is one of the issues faced by researchers that attempt to nd alter-native method to include empirical features of actual nancial market. This report aim to expand theanalytical exibility of the previous pricing model (such as black-scholes model, Merton's Jump model).We illustrate that the double exponential jump model can generate accuracy solutions for path-dependentoptions efciently. We also compare the simulation result of three models(geometric Brownian motionmodel, Merton's Jump diffusion model and Double Exponential Jump diffusion…...
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Diffusion, Dialysis And Osmosis
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In Diffusion, Dialysis And Osmosis lab, we discovered that we were going to observe and understand the conditions under which diffusion, dialysis, and osmosis occur. Then we constructed models of diffusion, dialysis, and osmosis. We predicted that the direction of change would be from the membrane to the beaker. We understood how these processes affected the selectivity of the cell membrane. The second part of the lab was dealing with dialysis. In this part we studied starch and sodium chloride…...
Cell Transport Permeability and Mechanisms
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Activity 2: Simulated Facilitated Diffusion Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Molecules need a carrier protein to help them move across a membrane because You correctly answered: they are lipid insoluble or they are too large. Which of the following is true of facilitated diffusion? You correctly answered: Movement is passive and down a concentration gradient. Examples of solutes that might require facilitated diffusion include You correctly answered: all of…...
Passive and Active Cell Transport Mechanisms
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The cell is invaluable building block of all biological life on this planet, and one of its most important and unique characteristics is its ability to be selectively permeable with its plasma membrane. This outer membrane’s sophisticated mechanisms of transport through its bilayer are vital in maintaining homeostasis in the cell and the entire body. To further understand these mechanisms, which can be further described as passive and active transport, five experiments were conducted. These tests were done over simple…...
Cell Transport Mechanisms
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Describe two Variables that affect the rate of diffusion. The two variables that affect the rate of diffusion are: A. The size of the molecule. The larger molecule will diffuse more slowly than the smaller molecule. B. The nature of plasma membrane. If the membrane is composed of lipid portion., only lipid soluble molecules can pass through while water molecules cannot. 3. Why do you think the urea was not able to diffuse through 20 MWCO? How well did the…...
Osmosis & Diffusion
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Kinetic energy, a root of energy stored in cells, causes molecules to hit into each other and move in new directions. Diffusion is the result of this contact. Diffusion is the random movement of molecules to an area of lower concentration from an area of higher concentration. Osmosis is a type of diffusion. This is the diffusion of water through a selectively permeable membrane from a region of higher water potential to a region of lower water likely. Water potential…...
Cell Transport
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There are two types of cell transport mechanisms. These types of transports are passive and active transport. The difference between active and passive is that passive does not require energy and active does require energy. The reason passive does not require energy is because it travels down a concentration gradient. On a concentration gradient molecules naturally move from high to low concentration. In active transport, molecules move from low to high concentration. There are three different types of transports for…...
Cultural Diffusion in Different Cultures
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Cultural Diffusion is the process by which a cultural trait, material objects, idea or behavior pattern is spread from one society to another. It is very common in ancient times when small groups of humans lived in adjoining settlements and spreading of ideas and culture occurs. Since cultures have never been completely isolated from each other, diffusion has happened through out history and continues on today. Mesopotamia, considered as a place where civilization begins, was destined to be a land…...
Compare and Contrast the spread of Christianity and Buddhism
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Both Buddhism and Christianity from their origins to the sixth century C. E. had similarities in that the diffusion was attributed through missionary work and conquest. Meanwhile, Christianity spread through the down fall of Rome and Buddhism spread by Ashoka who sent monks to share the teachings of the Buddha. Christianity and Buddhism both spread through missionaries. Specifically, Buddhism, towards part of South and Southeast Asia and, Christianity the Middle East through Europe. Buddhism’s missionaries were in forms of monks…...
Gas Diffusion
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OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion takes place when there is a concentration gradient of the diffusing component. Naturally, the diffusion in gas phase is much faster than the diffusion in liquid phase due to…...
Biology Diffusion Experiment
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Title: What is the effect of concentration of acid on the rate of diffusion in agar blocks? Aim: To investigate how the concentration affects the rate of diffusion of hydrochloric acid through agar blocks Research Question: To determine how will different concentrations (0.1M, 0.2M, 0.3M, 0.4M, 0.5M) of hydrochloric acid affect the rate of diffusion of sodium chloride through agar blocks? Introduction-include prediction; information you have researched before Diffusion refers to the passive movement of molecules along the concentration gradient.…...
Review Sheet Results
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1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Your answer: Because outside a typical cell, the concentration of K+ is about 5mM and the concentration of Na+ is about 150 mM. When you increase the concentration of K+ from 5 to 25 mM and reduce concentration of Na+ from 150 to 130 mM, the outside has more concentration of K+. The membrane is permeable to a particular…...
Lab 4 Diffusion and Osmosis
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1. Diffusion and Osmosis, June 4, 2013 2. Purpose: The purpose of this laboratory is to help provide visual understanding of diffusion which is a service of high concentration spontaneously (no energy required) moving to an area of low concentration. Likewise having a look at osmosis, which is the motion of chemicals throughout the cell membrane. Osmosis needs some kind of energy to be put in for this to take place. After these experiments we should have a much better…...
Agar Cubes Lab Report
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Diffusion in agar cubes Introduction All cells are dependent on a process called diffusion, which is the movement of a substance from an area of higher concentration to an area of lower concentration. Cells need to obtain certain essential substances, like oxygen, for their survival. The rate of diffusion is said to be dependent upon the various factors: Size of molecules that have to diffuse, concentration gradient, the distance across which diffusion occurs, number of pores/openings, surface area and concentration.…...
Physics of Diffusion Across a Selectively Permeable Membrane
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Introduction Diffusion is movement of molecules from one area of concentration to another. This process is vital for the life functions of cells. Cells have selectively permeable membranes that allow only certain solutions to pass through them. Osmosis is a special kind of diffusion that allows water to go through semi-permeable membranes of high water potential to a region of lower water potential. Water potential measures the tendency of water to leave one place and into another. Diffusion and osmosis…...
Rate of Diffusion
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To test the effect of molecular weight on the rate of diffusion, various experiments were performed. One of which is the glass tube test wherein cotton balls of the same size were moistened in two different substances (NH4OH and HCl). These cotton balls were plugged at each side of a glass tube. After some time, formation of a white ring occurred. The white ring, in fact, is a product of the reaction between the molecules of ammonia (NH3) and hydrochloric…...
Physio Ex 9.0 Activity 1 Cell Transport Mechanisms and Permeability
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ACTIVITY ONE- Cell Transport Mechanisms and Permeability: Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Molecular weight affects the rate of diffusion because the bigger the size of the molecule the longer it will take to diffuse. Membrane size is another variable that affects the rate of diffusion because if the membrane’s pores are small it will take molecules longer to diffuse though it than if the pores were larger. Also, membrane thickness is…...
Osmosis and Diffusion
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The basic principles of Osmosis and Diffusion were tested and examined in this lab. We examined the percent increase of mass and molarity of different concentrations of sucrose in the dialysis bag emerged in distilled water and the potato cores emerged in concentrations of sucrose. The data reinforces the principles of Osmosis and Diffusion, and in a biological context, we can simulate how water and particles move in and out of our own cells. Introduction Objective: 1. Investigate the process…...
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