The Effects of varying p-Nitrophenyl Phosphate concentrations on Alkaline Phosphatase Activity Nathan Overholt Louis Settembrino March 5‚ 2002 Abstract: The enzyme Alkaline Phosphatase was set up in solutions of varying p-nitrophenyl phosphate concentrations. A fixed time assay was used to find the Michaelis constant and Vmax. All solutions were incubated at 30 C° for 30 mins. Absorbances were measured at 405 nm‚ and the Km was found to be 0.002 M (pNPP) and the Vmax to be 0.433 A/min. Introduction:
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The full strength 1M HCl acid had a pH level of 3.12 (Table 3.1). Sample A2 to A4 remained in the pH 3 level‚ while sample A5 and A6 had a pH range of 4 (Table 3.1). The pH level for 1M HCl dilutions slightly increased between each sample (Table 3.1). The diluted solutions of 1 M NaOH showed a few unexpected results. The original solution of 1 M NaOH was at a pH level of 11.50 (Table 3.1). However‚ the pH of sample B2 increased to 12.81 (Table 3.1). The remaining samples had a decreasing pH pattern
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The purpose of this lab is to gain experience because an Iodometric titration was preformed and to determine the molarity and mass percent of an analysts in an commercial product. In this experiment my partner and I prepared 500mL of 0.07M sodium thiosulfate pentahydrate. As well‚ we added 0.05 grams of sodium bicarbonate and mixed it together with DI water. We got 60 mL of sodium thiosulfate solution in a clean 100-mL beaker. Then filled the buret to just above the 0 mL mark with sodium thiosulfate
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Purpose: The purpose of this experiment is to analyze four drinking water samples from different places using four of the standard drinking water tests required by the EPA. The experiment will be performed by a four person group‚ with each person providing a different water sample. The four tests to be performed are: pH‚ conductivity‚ phenolphthalein and total alkalinity‚ and total and non-carbonate hardness. Data from these four tests will be gathered and analyzed‚ drawing conclusions “about
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A wireless LAN or WLAN is a wireless local area network‚ which is the linking of two or more computers or devices without using wires. WLAN uses spread-spectrum or OFDM modulation technology based on radio waves to enable communication between devices in a limited area‚ also known as the basic service set. This gives users the mobility to move around within a broad coverage area and still be connected to the network. For the home user‚ wireless has become popular due to ease of installation‚ and
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LAN Topologies Archie Ben IT/240 Justin Davison Aug 28‚ 2011 11. Your network consists of four servers. Each server has three NICs. Server A is connected to servers B‚ C‚ and D. Server B is attached to C and D. Server C is attached to server D. No hub is used. All cabling is CAT 3 UTP crossover cables. What is your physical topology? a. Star b. Bus c. Ring d. Mesh Answer: This would be an example of a modified “mesh” topology. No hub is used‚ just crossover cables and multiple Nic cards
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from the Institute of Electrical and Electronics Engineers. This includes wireless local area network (WLAN) connections‚ device to device connectivity (such as Wi-Fi Peer to Peer aka Wi-Fi Direct)‚ Personal area network (PAN)‚ local area network (LAN) and even some limited wide area network (WAN) connections. Manufacturers with membership in the Wi-Fi Alliance‚ whose products pass the certification process‚ gain the right to mark those products
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Case Study 1: Municipal WiFi In this currently changing data-thirsty world‚ people like to access the information regarding family‚ business‚ politics‚ education and social or professional networking in their day-to-day lives. Thus‚ As-mobile-as-possible wireless access to the internet‚ intranet or a corporate database. Applicable services and features will include: VoIP in this case VoWLAN‚ Navigation w/o GPS but over Wireless network Internet browsing for professional development
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wireless LAN An ad-hoc network also called WiFi Direct network is a network where stations communicate only peer to peer (P2P). There is no base and no one gives permission to talk. This is accomplished using the Independent Basic Service Set (IBSS). Bridge A bridge can be used to connect networks‚ typically of different types. A wireless Ethernet bridge allows the connection of devices on a wired Ethernet network to a wireless network. The bridge acts as the connection point to the Wireless LAN.
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however the wi fi alliance has expanded the generic use of the Wi-Fi term to include any type of network or WLAN product based on any of the802.11 standerds‚ including 802.11b‚802.11a‚ dual band ‚and so on‚in an attempt to stop confusion about wireless LAN interoperability. How Wi-Fi Works? Wi-Fi works with no physical wired connection between sender and receiver by using radio frequency (RF) technology‚ a frequency within the electromagnetic spectrum associated with radio wave propagation. When an
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