A Profile of Radio Astronomer Jocelyn Bell Burnell

Cloning of Enhancer of Zeste Homolog 2 in Forward...

Title: Cloning of Enhancer of Zeste Homolog 2 in forward orientation into Escherichia Coli using histidine-tagged pbluescript II KS+. Abstract Enhancer of Zeste Homolog 2 locus is intensely over expressed in breast and prostate cancer and it’s been established that its promoter inhibition by p53 has led to reduced cell proliferation and invasion (Bracken, 2003; Xiao, 2011). Objective is to clone a forward orientated EZH2 insert into a his-tagged pbluescript. Cloning EZH2 into a histidine-tagged pbluescript in a forward orientation potentially allows isolation of protein via Affinity Chromatography or Chromatin Immunoprecipitation therefore its role, effects and targets in the genome can be established. Resultant Recombinant plasmids in†¦show more content†¦Its locus is particularly amplified in these noted tumours leading to the progression of these cancers, it can be suppressed by p53 (tumour/ proliferation suppressor) which represses the EZH2 promoter, resulting inhibition of cell proliferation and invasion (Bracken, 2003; Xiao, 2011). The vital components and techniques of gene cloning are as follows, the DNA sequence that contains the desired gene (EZH2) is amplified by Polymerase chain reaction. PCR was established by Kary Mullis in 1985, popularly known to amplify target sequences of DNA (EZH2) to a billion fold in several hours using thermophilic polymerases (Taq) ,primers and other cofactors (Sambrook and Russell, 2001). Three crucial steps are involved which are Denaturation (at 95 °), Annealing of the forward and reverse primers (55-65 °) and lastly primer extension (at 72 °). After amplification the desired sequence is integrated into the circular vector (pbluescript) forming the recombinant molecule. For the compatibility of the insert and vector, both were digested with (EcoR1) so the same cohesive ends are generated in both, making it easier to ligate. EcoR1 is a restriction enzyme that belongs to the type II endonuclease class which cuts within dsDNA at its recognition site â€Å"GAATTC† (Clark 2010; Sambrook and Russell, 2001). Agarose Gel electrophoresis uses electric fields and ethidium bromide (under UV

Examine the way in which Bluetooth integration functions with Wi-Fi modems Free Essays

string(76) " mobile to have access in an inbox of a mail address to receive a feedback\." Introduction Bluetoothâ„ ¢ is a revolution in wireless technology specially short-range digital communication among computing and communications devices. It is a latest wireless communication technology for exchanging data over short distances, and is an attempt to get rid of computer’s jungle of wiring. Using a special radio frequency to transmit data, it creates a short range network. We will write a custom essay sample on Examine the way in which Bluetooth integration functions with Wi-Fi modems or any similar topic only for you Order Now It is very secure and can connect up to eight devices. Bluetooth wireless technology enables robust, secure, wireless connections between portable and fixed devices. So the main features of Bluetooth technology are robustness, low power, and low cost. Bluetooth can improve in any short distance communication system like medical instrument, end to end data transfer etc. It has high mobility which means it can be moved anywhere, long life battery which means it lasts longer than any other equipment and it has no infrastructure to support model. This project consists of building a remote health monitoring system which provide a autonomous system for regular patients. The project is designed to meet its aim to provide a plug-and-play system which run over router and transmit data through Bluetooth. A Bluetooth adaptor will be built whose has input from Bluetooth and output via Ethernet/Wireless device. The Tele-health (TH) technology has invented so many systems so far which are helping patients cope, manage and improve their health condition. It has been also used to reduce the workload of healthcare practitioners specially for those patients whose need to visit practitioners regularly basis. However, current TH systems often require patients to actively interact with the technology and this is major drawback of all current TH technologies. â€Å"The reason being that the elderly patients who are suffering from chronic condition, may find it difficult to interact with new TH technologies. Therefore, our proposal aims to pro vide a plug-and-play system which permits all ever-present connectivity between different components of the TH system with requiring minimal input from patients† [1]. As stated before, this project intends to develop an end-to-end TH system that permits monitoring and feedback solution which uses every-possible technology, e.g: mobile phone technology (GSM, 3/4G), IEEE (Institute of Electrical and Electronic Engineers) Bluetooth Wi-Fi, xDSL (Broadband) communication standards and even in POTS (Plain Old telephone service) as well. â€Å"Furthermore, an automatic feedback mechanism on the reading of patients’ health parameter will be embedded in the system. Thus, if a location has limited or no mobile phone network coverage, especially in rural areas, then the access point approach to data transmission would be adopted† [1]. Currently, there are already so many TH systems exist in the market. TH system currently developing and different health organizer are adopting new TH systems. Moreover, so many universities are researching about new technologies TH systems. Let’s consider a scenario where this TH system would be use for: With this TH system, patients will take their blood pressure measurements at home using a Bluetooth enabled or adaptable specific kind of monitoring device. In this project, an extra mobile will take place instead of that monitoring device which is enable to send the reading of specific measurement, taken by patients. This mobile is Bluetooth enabled and have a special designed software that helps to connect another Bluetooth enabled device (patient mobile) and transmits data to that device. The patient mobile is a remote device that uses for building connection with PC and whatever data come from the first mobile (monitoring device), passes to PC automatically. The patients mobile also capable to receive any feedback from the doctor as well. The PC works as an end-to-end device in this project which is connected with internet. The PC is capable and send any data received from patient mobile to a particular email address. The whole mechanism will be designed and build to transmit and response automatically. On the other hand, The doctor receives readings of a particular patients and send the feedback for that readings via PC and Internet. The patient mobile has a special kind of software which is enable to receive a feedback coming from the doctor. The whole system is represented graphically in figure 1. Aim The aim is to design and build a plug-and-play Bluetooth interface (within laptop) that connects Bluetooth enabled phones with a doctors surgery using a designated patients email address. The patients phone sends his/her latest results using Bluetooth to the interface which then sends an email to the surgery. This avoids expensive text messaging (multiple users increase cost). The doctor then has daily information on patients condition allowing them to make more appropriate decisions regarding their healthcare. It importantly also allows patients to carry on their daily life as normal, knowing that their latest results are being considered rather than intermittent results while visiting the doctors surgery. Although this work is demonstrated using Wi-Fi, it could easily be done with a simple ADSL modem connection via a network cable. The system works in both equally. What’s important is that there is an internet connection and a PC within the home or a phone with internet connection. Objectives To do background reading and investigation about Bluetooth technology, Ethernet/IEEE standard 802.11 and Wi-Fi modem. To design a Bluetooth interface which makes connection between two Bluetooth enabled mobiles and a PC. To construct a Java program using J2ME for first mobile (monitoring device) to create a connection with second mobile and sending message over that phone. To construct a Java program using J2ME for second mobile (Patients mobile) to form a bridge connection between first mobile and PC to transmit data via that mobile. To construct a Java program using Java SE for PC to create connection with webmail server and send data in that mail address automatically. To test the connections using two mobiles and check for errors and limitations. To build a PC application using Java SE to give feedback from that webmail server remotely to any mail server. To construct a mobile application using J2ME for second mobile to have access in an inbox of a mail address to receive a feedback. You read "Examine the way in which Bluetooth integration functions with Wi-Fi modems" in category "Essay examples" To test PC application and mobile application and check errors and limitations. To integrate and test whole interface and all programs. To investigate the limitation and problems of the whole system and find solutions about them. To investigate the implementation of that Bluetooth interface for future purposes. Deliverables Project arrangement form: To be completed by Friday 8th October 2010 Interim Report: This report explains the aims and objectives of this project. The requirement for the project and planned technical approach also is included. This report will be submitted by Friday 5th November 2010 and received feedback from supervisor by Friday 19th November 2010. Draft Final report to supervisor: A draft version of the final project report must be submitted for feedback to the supervisor by Friday 25th March 2011. Final project report: Final Project e-Report must be submitted by Tuesday 3rd May 2011 through TURNITIN for plagiarism checking and Final Project Report and log book must be submitted to Faculty office by Thursday 5th May 2011 as mentioned in the Unit Guide. Project Viva and Presentation: Project Viva and Hardware/software Demonstrations will take place in 2nd Semester Examination Period. Constructed Hardware/Software: This project contains both hardware and software part which need constructed. A network adaptor need to design and build and a program which support this adaptor need put together as well. Technical Background and Context Bluetooth The term Bluetooth TMrefers to an open specification for a technology to enable short-range wireless voice and data communications anywhere in the world [2]. Bluetooth technology also uses radio waves like all other communication medium. Bluetooth technology sends information within your own personal space, which is called Personal Area Network (PAN) at distance up to 10 meters. Now-a-days every single communication device has Bluetooth built-in. The Bluetooth Special Interest Group (SIG) has produced an open specification for Bluetooth wireless communication. The reason behind being open specification, this is publicly available and royalty free. To help advance extensive acceptance of this technology, an open specification has been a primary objective of the SIG (The explanation of SIG will be later on). Bluetooth technology is a short-range communication technology that is simple, secure, and everywhere [3]. It is planned for replacing the cables connecting devices. It also maintains high level of security. That’s why Bluetooth wireless technology is widely accepted by public so much that this technology is built into a wide range of products, from cars and mobile phones to medical devices and computers. With Bluetooth technology, these devices can communicate without having any wire over a single air-interface, using special kind of radio waves or frequency to transmit and receive data. So Bluetooth is a way of exchanging data wirelessly over short distances, and is an attempt to do away with your computer’s jungle of wiring. Bluetooth is a piece of hardware or a small computer chip that contains the Bluetooth radio, and some software that lets the users, connect devices using Bluetooth technology. That’s why Bluetooth is very cheap and a very small sized chip which can fit in any kind of device. Even with Bluetooth technology, making connections is as easy as just powering up the device. â€Å"The Bluetooth radio transceivers operate in the globally available unlicensed ISM radio band of 2.4 GHz. The ISM (Industrial, Scientific, and medical) bands include the frequency ranges at 902 MHz to 928 MHz and 2.4 GHz to 2.484 GHz, which do not require an operator’s license from a regulatory agency† [4]. Now, the question arouse: why do we need one more wireless technologyBy comparing all other existing wireless technology with Bluetooth, it can be much more clear about why we need one more wireless technology where there is so many successful wireless technologies. It is also going to give much more details about Bluetooth technology. If infrared and Bluetooth devices can support many of the same applications, why do we need both technologiesInfrared transceiver must need to see each other â€Å"eye to eye† and devices must be in a few feet apart, otherwise transmission will fail. Bluetooth overcomes the distance limitation by having a nominal range of about 30 feet (as stated above). Another sense is Bluetooth works like radio, so transmissions are Omni-directional. Bluetooth can penetrate solid objects and its capability to communicate with other devices in a network called â€Å"piconet† allows for data exchange opportunities that are very hard or impossible with infrared. When it comes to data transfer speed, Infrared can transmit data at very high speed of 4 Mbps while Bluetooth can only at 721 Kbps though new versions of Bluetooth technologies are coming. Now 802.11b (wireless LAN) is to connect large devices that have lots of power at high speed typically 11 Mbps within distance of 300 feet. Though less distance and transmit speed, Bluetooth is to connect peripherals like PDAs and mobile phones and consume less power 500 times. So it’s not definitely replaced by 802.11b (wireless LAN). 802.11b (wireless LAN) can’t be use instead of Bluetooth for transmitting between peripherals. The radio uses 2.5 mW of power. Bluetooth has been designed to have very low power consumption. The Bluetooth Special Interest Group (SIG) As previously described, Bluetooth wireless communication is personified as a technology specification. The body manages the development of Bluetooth standards and the licensing of the Bluetooth technologies and trademarks to manufacturers is called the Bluetooth Special Interest Group (SIG). The Sig is a privately held, not-for-profit trade association founded in September 1998 [5]. There was no Bluetooth SIG headquarter or no Bluetooth corporation or any sort of legally incorporated entity until 2001. The SIG built-in and is now officially recognized as the Bluetooth Special Interest Group, Inc in February 2001. Now the SIG is headquartered in Kirkland, Washington with Michael W. Foley presently its executive director [5]. Currently the SIG is comprised of more than 14000 member companies. The SIG has local offices in Hong Kong, Taiwan, China, Korea, Japan and Sweden. The SIG depends upon the contributions and participation of its member companies. Clearly a major task of the SIG h as been to develop the specification, but other SIG activities include joint work with other consortia and standards and regulatory bodies, educational and promotional events such as developers’ conferences and the definition of a testing and certification process [2]. Bluetooth technology was visualized by engineers at Swedish telecommunications manufacturer Telefonaktiebolaget LM Ericsson who realized the necessary of global short-range wireless communication. In 1994 Ericsson had begun a project to study the feasibility of a low-power, low-cost radio interface to eliminate cables between mobile phones and their accessories [2]. The Bluetooth SIG was formed to focus on developing open specification by the leading companies in computing and telecommunication in early 1998. The founding companies of the SIG are Ericsson, Intel Corporation, International Business Machines Corporation (IBM), Nokia Corporation and Toshiba Corporation. These companies formed the original core group of the SIG, actually known as promoter companies. History the name Bluetooth â€Å"The engineers at Ericsson code named the new wireless technology Bluetooth to honor a 10th century Viking king in Denmark. Harald Bluetooth reigned from 940 to 985 and is credited not only with uniting that country, but with establishing Christianity there as well† [4]. Harald name was actually Blatand, which roughly translates in English as â€Å"Bluetooth†. It seemed perfect to the SIG founders to name the organization that was intended to unify multinational companies after a Scandinavian kind who united countries. Thus the Bluetooth name was initially an unofficial code name for this project but today has become the trademark name of the technology and the SIG. Figure 2 is showing the logo, inspired by the initials â€Å"H B† for Harald Bluetooth. In 1994, Ericsson Mobile Communications, the global telecommunications company situated in Sweden, initiated a study to investigate the feasibility of a low-power, low-cost and wireless interface between mobile phones and their accessories. The main aim of this study was to find a way to get rid of the cables between mobile phones and their accessories. Reference 1)Dr. S. Dudley-Mcevoy, â€Å"Proposal for Synchronous Patient Reinforcement Incorporating Tele-medical Environment (SPRITE)†, London: London South Bank University, November 2010. 2)B. A. Miller, C Bisdikian. Bluetooth Revealed, 2nd edition. New Jersey: Prentice Hall, 2002. 3)Bluetooth SIG, â€Å"Bluetooth specification†, online, available from: http://www.bluetooth.com. [accessed 12th APR 2011] 4)N. J. Muller. Bluetooth Demystified. New York: McGraw-Hill Telecom, 2001. 5)Wikipedia, â€Å"Bluetooth Special Interest Group†, online, available from: http://en.wikipedia.org/wiki/Bluetooth_Special_Interest_Group. [Accessed 13th APR 2011] N. Eddy. Bluetooth SIG adopts Low Energy Version 4.0, eWEEK Europe UK, 2010. [Online] Available from: http://www.eweekeurope.co.uk/news/bluetooth-sig-adopts-low-energy-version-40-8224 [Accessed 14 APR 2011 How to cite Examine the way in which Bluetooth integration functions with Wi-Fi modems, Essay examples

Plasticity in web design in the spider Parawixia bistriata a response to variable prey type Essay Example For Students

Plasticity in web design in the spider Parawixia bistriata: a response to variable prey type Essay Phenotypic plasticity is the ability of an organism or genotype to express an alternative morphology, phys iology or behaviour in response to environmental stimuli (Schlichting 1986). Plasticity is a trait in itself, subjected to natural selection and evolutionary change (Bradshaw 1965) Foraging strategies of gen- eralist predators am Ã'‡Ð °Ã ³Ã'Æ' from n single generalized strategy to a repertoire of very specialized strategies. Plasticity in foraging strategies should be favoured if specialized strategics are levs efficient in capturing the different prey types than generalized ones. Orb weaving spiders are usually considered generalist predators but there is no Ð µÃ'‡ ideiKe that they can alter their webs in response to different types of prey Although within-spccics variation in web design has been well documented, it has been attributed to fac tors other than prey capture, such as restricted space for the web. wind, rain or starvation (Craig 1989: sev eral examples cited in F.berhard 1990 and Hcnschcl Lubin 1990). How should web design vary with prey type? To maximize the probability that prey will be captured when a limited amount of silk is produced, a web should have the largest area that does not compromise the efficiency of contact between sveb and insect; this is achieved when the mesh size equals the jirey sic. For the same amount of silk, a smaller web with finer mesh may be required to stop and retain a heavy or fast-flying prey without it breaking through the web (F.bcrtiard 1990) (the words stopping’ and ‘retention’ arc used as defined in the review by F.bcrh «rd 1990 meaning the absorption of the prey energy and the adhesion of the prey until the spider arrises, respec tively ». This is because the kinetic energy of the prey is a positive function of its mass and velocity. Thus, a spiders capture success may depend on the size (area or standard length), weight and Hying speed of llie prcv. Evidence from comparaiive studies suggests that some nocturnal spider s that capture heavy, fast flying prey have webs of relatively narrow mesh (Fbcrhard 1986) but in general, web design is not considered to be fmc-luncd to specific prey types (F.berhard 1990). A Brazilian colonial spider Parawixia bistrkihi Rengger 1936 (Arancidac) has been observed spin ning two distinct types of webs which differed in size and architecture. The question is, can these differ ences be attributed to sanation in prey type avail ability? Parawixia bistrxata is a colonial orb-weaving spider commonly found in cerrado (savanna) vegeta tion in South America. Its life cycle is univoltinc and dcs-clopnirnt within the colony and the population as   a whole is synchronous (Gorgonio 1978: Gobbi 1979; Sandoval 1987; Fowler Gobbi 1988). Spidcrlings from lbe second to fifth instars typically feed during sunset; after the fifth instar spiders feed only at night, For both activity periods, all member » of each colony spin their individual orb webs simultaneously, term ing a large net of linked orb-wchs. At the end of the feeding period, each spider ingests its own web and retreats to a communal aggregation until the next day (Gobbi 1979; Sandovul 1987). Unusual webs were occasionally spun during the day: their occurrence was temporally correlated with local termite swarms. These daytime’ webs were observed every Septem ber. during a 3-year study of the foraging and social behaviour of P. bistriata Here, die temporal and mor phological characteristics of webs and prey observed at sunset and daytime are compared. Outline1 Materials and methods2 Results3 WEB DESIGNS Materials and methods This study was conducted over 5ha of undisturbed habitat (cerrado vegetation) of P. bistriaia in Itira pina. Siio Paulo, Brazil. The occurrence of each web type of II colonics in .September 1984 and five colonies in September 1985 was counted over several days. These web types were easily distinguished (sec Fig. I). To quantify differences between web types, detailed measurements of web dimensions were taken from randomly selected webs of oik colony in 1986 because, in this colony, all individuals spun sunset webs and most of them also spun daytime webs the following day. Ibis indicates that both web types were spun by the same individuals within a short time period, litis procedure was necessary a » individuals were nor marked because previous attempts had   shown that marked individuals may not spin webs the next day. Furthermore, if a different number of spi ders spun w ebs on different days, the cause of change in web design could be attributed to variation in space available for web building. From the webs of this colony web and hub diameters were measured, and the spiral and rndii numbers of 10 randomly chosen webs spun at sunset were counted (see Table 2 for definition of web characteristics. .u9e7630ee3bfe6636054e5750b9267527 , .u9e7630ee3bfe6636054e5750b9267527 .postImageUrl , .u9e7630ee3bfe6636054e5750b9267527 .centered-text-area { min-height: 80px; position: relative; } .u9e7630ee3bfe6636054e5750b9267527 , .u9e7630ee3bfe6636054e5750b9267527:hover , .u9e7630ee3bfe6636054e5750b9267527:visited , .u9e7630ee3bfe6636054e5750b9267527:active { border:0!important; } .u9e7630ee3bfe6636054e5750b9267527 .clearfix:after { content: ""; display: table; clear: both; } .u9e7630ee3bfe6636054e5750b9267527 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .u9e7630ee3bfe6636054e5750b9267527:active , .u9e7630ee3bfe6636054e5750b9267527:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .u9e7630ee3bfe6636054e5750b9267527 .centered-text-area { width: 100%; position: relative ; } .u9e7630ee3bfe6636054e5750b9267527 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .u9e7630ee3bfe6636054e5750b9267527 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .u9e7630ee3bfe6636054e5750b9267527 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .u9e7630ee3bfe6636054e5750b9267527:hover .ctaButton { background-color: #34495E!important; } .u9e7630ee3bfe6636054e5750b9267527 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .u9e7630ee3bfe6636054e5750b9267527 .u9e7630ee3bfe6636054e5750b9267527-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .u9e7630ee3bfe6636054e5750b9267527:after { content: ""; display: block; clear: both; } READ: Total Physical Response EssayThese measure ments were repeated the next day when the spiders built daytime webs. From these data, die mean mesh size was calculated, defined here as the mean distance between two spiral turns. To calculate mesh size, the web radii minus the hub radii was divided by the number of spiral turns, The total length of silk used per web was calculated by adding the length of all spirals and radii. The size of insects captured was observed and recorded in five colonics (three colonics in 1984 and two colonies in 19851 at sunset, when one of the web types was spun daily. The length and width of the prey trapped in an area of 1 m2 dial comprised sever al webs, during a period of 30 min was measured All the prey captured in daytime webs of three colonics in 1984 were recorded immediately after termites hÐ µd swan nod. Available prey (flying insects) were sampled with standard sticky traps. Three 40 x 40cm clear plastic sheets coated with polybutanc (an odourless, trans- parent substance i were attached to a pole at heights of 0 5 m. 15 m and 2-5 m. This was the height range where the spiders normally spun their webs. Sticky trap » were about 5 m away from the colony from which web dimensions and observations of prey cap- ture were recorded All the insects were collected from the traps after six I h intervals to estimate diurnal variation in flight activity of prey (from 6.Ð ¨ to 20 00 h). This procedure was necessary because preliminary sampling had indicated that the availability of different prey types changed rapidly throughout the day. Trapping was repeated on 4 separate days: 3 days in 1984 (27 September, termite swarms p resent; 24 and 25 October, termites not present) and I day in 1985 (28 September, termites not prescru). To evaluate the effectiveness of tlic two web types in trapping prey of different sizes the size of prey cap- tured by the webs was compared with the size of those prey caught by sticky traps using a Kolmogorov- Smimov test. Only die samples and obsersations that were taken simultaneously were used for these com- parisons Results MIL OF FORAGING ACTIVITY OF SPIDERS AND THEIR PREY Of the II colonics whose sumct webs were counted (90-800 individuals, mean  ±SL = 290012150).  Ã‚  Only one colony contained some individuals that did not construct webs. Thus. 92-5% of all spiders observed in September 1984 and 1985 during sunset constructed sunset webs In these colonies, sunset web building began between 16.00 and I7.00h . Sunset occurred at approximately 18 00h The time of foraging activity at sunset coincided with the lime that small prey were most abundant The periodicity of flight activity of these prey was very predictable and varied little between days . In comrast. daytime webs were spun at variable times, always around the peak of termite swarms; usually within 30 mm before or after the termite swarm began (Table II. The variation in time of web-spin ning activity was not owing to variation in age or m/Ã'  of spiders as different colonies of P. bistiiaia have synchronous development (Sandoval 1987) All ter mite swarms observed occurred during rain Unlike the small (lies, termites had variable periodicity of flight activity. Nonetheless, the spiders were able to track their availability over time The two types of webs were never observed to occur simultaneously and daytime webs were ingested before the sunset webs were spun. Termites were never observed dur ing sunset and daytime webs were never observed in the absence of termite swarms. WEB DESIGNS Daytime and sunset webs differed significantly in a number of key dimensions in tlic colony studied and could easily be distinguished by eye. The mesh size of daytime webs was. on average, three times larger than sunset webs (Fig. I. Table 2). Mesh enlargement resulted from both an 82% increase in web diameter and a 57% decrease in the number of spiral turns. Tlvcic was no overlap in these dimensions for the two web types The amount of silk did not differ between the two web types (Table 2). Because the number of radii and spirals were smaller and the area was larger in daytime webs than in sunset webs, then, all else being equal, daytime webs were probably weaker for stopping prey. Although web measurements were taken from a single colony, the dimorphism in mesh si/c and diameter was observed m 10 other colonies (Table 11. Ibis dimorphism was not a result of varia tion in sie, age or individual variation in behaviour within colonics because the development within colonies was extrem ely synchronous (Sandoval 1987)   and all individuals spun their webs at both activity periods when webs were measured Furthermore, daytime webs wen; unique to day activity and sunset webs were unique to sunset activity. Thus, it is clear that web dimorphism ill P. bixtriata is the result of plasticity in the web building behaviour of each indi vidual. .ue5a76689021286c0a2cd7e92334839f8 , .ue5a76689021286c0a2cd7e92334839f8 .postImageUrl , .ue5a76689021286c0a2cd7e92334839f8 .centered-text-area { min-height: 80px; position: relative; } .ue5a76689021286c0a2cd7e92334839f8 , .ue5a76689021286c0a2cd7e92334839f8:hover , .ue5a76689021286c0a2cd7e92334839f8:visited , .ue5a76689021286c0a2cd7e92334839f8:active { border:0!important; } .ue5a76689021286c0a2cd7e92334839f8 .clearfix:after { content: ""; display: table; clear: both; } .ue5a76689021286c0a2cd7e92334839f8 { display: block; transition: background-color 250ms; webkit-transition: background-color 250ms; width: 100%; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #95A5A6; } .ue5a76689021286c0a2cd7e92334839f8:active , .ue5a76689021286c0a2cd7e92334839f8:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; background-color: #2C3E50; } .ue5a76689021286c0a2cd7e92334839f8 .centered-text-area { width: 100%; position: relative ; } .ue5a76689021286c0a2cd7e92334839f8 .ctaText { border-bottom: 0 solid #fff; color: #2980B9; font-size: 16px; font-weight: bold; margin: 0; padding: 0; text-decoration: underline; } .ue5a76689021286c0a2cd7e92334839f8 .postTitle { color: #FFFFFF; font-size: 16px; font-weight: 600; margin: 0; padding: 0; width: 100%; } .ue5a76689021286c0a2cd7e92334839f8 .ctaButton { background-color: #7F8C8D!important; color: #2980B9; border: none; border-radius: 3px; box-shadow: none; font-size: 14px; font-weight: bold; line-height: 26px; moz-border-radius: 3px; text-align: center; text-decoration: none; text-shadow: none; width: 80px; min-height: 80px; background: url(https://artscolumbia.org/wp-content/plugins/intelly-related-posts/assets/images/simple-arrow.png)no-repeat; position: absolute; right: 0; top: 0; } .ue5a76689021286c0a2cd7e92334839f8:hover .ctaButton { background-color: #34495E!important; } .ue5a76689021286c0a2cd7e92334839f8 .centered-text { display: table; height: 80px; padding-left : 18px; top: 0; } .ue5a76689021286c0a2cd7e92334839f8 .ue5a76689021286c0a2cd7e92334839f8-content { display: table-cell; margin: 0; padding: 0; padding-right: 108px; position: relative; vertical-align: middle; width: 100%; } .ue5a76689021286c0a2cd7e92334839f8:after { content: ""; display: block; clear: both; } READ: How Does Shakespeare's Presentation Of Shylock Affect Our Response To The Character Essay