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Physical Sciences and Mathematics

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2016

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Articles 31 - 60 of 147

Full-Text Articles in Life Sciences

The Correlation Between Basal Isoprene Emissions And Climate Of The Native Range Across Oak Species, Mary J. Babiez Jul 2016

The Correlation Between Basal Isoprene Emissions And Climate Of The Native Range Across Oak Species, Mary J. Babiez

DePaul Discoveries

Isoprene is a biogenic volatile organic compound that is emitted by various plant species and plays an important role in the chemistry of the atmosphere. When it reacts with pollutants in the air, such as nitrogen oxides, the precursor to ozone (O3) is formed. In this experiment, we measured leaf emissions from 20 different oak species at the Morton Arboretum (Lisle, Illinois). The aim was to better understand differences in isoprene emissions across oak species. Since emissions have been found to protect leaves against brief periods of heat stress, we hypothesized that oaks native to areas with greater …

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An Investigation Of The Major Wheat Weeds In Different Zones Of Dera Ismail Khan, Zahid Usman, Ejaz Ahmad Khan, Iqtidar Hussain, Anis Ali Shah, Kalim Ullah, Muhammad Sadiq Jul 2016

An Investigation Of The Major Wheat Weeds In Different Zones Of Dera Ismail Khan, Zahid Usman, Ejaz Ahmad Khan, Iqtidar Hussain, Anis Ali Shah, Kalim Ullah, Muhammad Sadiq

Journal of Bioresource Management

On account of huge yield losses, weed infestation is a serious threat in wheat crops throughout the country. A comprehensive survey to find out the major weeds in wheat in Dera Ismail Khan was carried out during the crop season of 2012-13. Wheat fields at seed farms of Rakhmanghan, RakhZandani, Rata Kulachi and adjacent farmer’s fields to each seed farm were investigated. Data was collected at the peak growth stage of weeds and the quadratic method was used to record relative density (RD), relative frequency (RF), relative crowding coefficient (RCC) and importance value index (IVI). The results revealed that the …

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Metal Mixtures Toxicity And Bioaccumulation In Tilapia Nilotica At 96-Hr Lc50 Exposure, Faiza Ambreen, Muhammad Javed Jul 2016

Metal Mixtures Toxicity And Bioaccumulation In Tilapia Nilotica At 96-Hr Lc50 Exposure, Faiza Ambreen, Muhammad Javed

Journal of Bioresource Management

Laboratory tests were conducted on fingerlings of Tilapia nilotica to check the bioaccumulation patterns of lead (Pb), cadmium (Cd) and cobalt (Co) during acute toxicity at constant water temperature, pH and total hardness. Metal mixtures viz. Lead + Cadmium, Cobalt-Lead and Cadmium-Cobalt were selected to assess the acute toxicity in terms of 96-hr LC50 along with bioaccumulation patterns in selected organs of Tilapia nilotica (skin, muscles and liver). Sensitivity of Tilapia nilotica in terms of 96-hr LC50 for all mixtures varied significantly. The 96-hr LC50 of binary metal mixtures agreed in that order: cadmium-cobalt > lead-cadmium > cobalt-lead with statistically significant differences …

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Bistorta Amplexicaulis: A Brief Insight To Its Ethnobotany, Salma Batool, Muhammad Sheeraz Ahmed Jul 2016

Bistorta Amplexicaulis: A Brief Insight To Its Ethnobotany, Salma Batool, Muhammad Sheeraz Ahmed

Journal of Bioresource Management

Bistorta amplexicaulis (D. Don) Greene is an herb that belongs to the Family Polygonaceae. Its local name in Pakistan is Rain and masloon (Saqib and Sultan, 2005) and in India it is Sarbguni (Sharma et al., 2004).

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Status Of Basic Taxonomic Skills In Botanical Articles Related To Azad Jammu And Kashmir, Pakistan: A Review, Arshad Mahmood Khan, Rahmatullah Qureshi, Mirza Faisal Qaseem, Waseem Ahmad, Zafeer Saqib, Tariq Habib Jul 2016

Status Of Basic Taxonomic Skills In Botanical Articles Related To Azad Jammu And Kashmir, Pakistan: A Review, Arshad Mahmood Khan, Rahmatullah Qureshi, Mirza Faisal Qaseem, Waseem Ahmad, Zafeer Saqib, Tariq Habib

Journal of Bioresource Management

The problems of synonymy, incorrect species author citation/abbreviation and spelling errors are hampering botanical research around the globe. This article was aimed to quantify the intensity and errors encountered in this regard in published botanical articles pertaining to the Azad Jammu and Kashmir, Pakistan. To address this issue, 100 articles published in 1999-2015 were reviewed. A total of 5460 entries were processed carefully and 1350 species binomials (excluding repititions) were extracted that were linked with 1333 accepted binomials according to theplantlist.org. Out of these accepted species binomials, 1109 were communicated correctly, whereas the remaining 224 binomials were conveyed in the …

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A Survey Of Weed Varieties In Samanabad, Lahore, Sadaf Nazir, Beenish Zia Butt, Anjum Navid Jul 2016

A Survey Of Weed Varieties In Samanabad, Lahore, Sadaf Nazir, Beenish Zia Butt, Anjum Navid

Journal of Bioresource Management

A weed is an herbaceous plant that grows as a wild plant, and is considered a hindrance in the growth of preferred vegetation or cumbering the ground, and has no value for beauty or use. However, some weeds have roles in medicine, ecology and many other fields. A survey was conducted in Lahore to observe the weed varieties present in the area of Samanabad. The present study was carried out in May and June 2014.The primary purpose of the study was to gain knowledge about the availability of the total number of species present in this area. We also assessed …

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Required Biochem Class Live-Streamed This Summer: Collaboration With Union College Makes Required Credits Easier To Obtain, Chris Mclean-Wheeler Jun 2016

Required Biochem Class Live-Streamed This Summer: Collaboration With Union College Makes Required Credits Easier To Obtain, Chris Mclean-Wheeler

Andrews Agenda: Campus News

No abstract provided.

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Shell Bluff – A Fossiliferous Ridge, The Site Of The Extinct Oyster Crassostrea Gigantissima And History Of Its Identification, Elliott O. Edwards Jr. Jun 2016

Shell Bluff – A Fossiliferous Ridge, The Site Of The Extinct Oyster Crassostrea Gigantissima And History Of Its Identification, Elliott O. Edwards Jr.

Georgia Journal of Science

Shell Bluff is described by geologists as stratigraphically one of the most important exposures in the Georgia Coastal Plain because the bluff is home to the large oyster, Crassostrea gigantissima, now extinct. Native Americans inhabited this area prior to Hernando DeSoto and his men who visited the area in 1540. They were probably the first Europeans to visit Shell Bluff. John and son William Bartram visited the bluff in 1764 and John described the bluff in his journal and the existence of large oysters. The British naturalist, John Finch, described a fossil oyster taken from the site in 1824 as …

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Great Lakes Focus On Water Quality: Vol.4 Iss.3, Uwindsor Administrator Jun 2016

Great Lakes Focus On Water Quality: Vol.4 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

In October and November the Pollution from Land Use Activities Reference Group (PLUARG) will sponsor information meetings throughout the Great Lakes Basin. The purposes of the sessions are to present the PLUARG final report, Environmental Management Strategy for the Great Lakes System, with its conclusions and recomendations (See PLUARG write up, page 6), explain the IJC's hearing process, and encourage people to present their views on the report to the Commission on Public Hearings.

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Upper, Lower Solutions And Analytic Semigroups For A Model With Diffusion, Yannick T. Kouakep Jun 2016

Upper, Lower Solutions And Analytic Semigroups For A Model With Diffusion, Yannick T. Kouakep

Applications and Applied Mathematics: An International Journal (AAM)

In this discussion we consider an autonomous parabolic epidemic 2-dimensional system modelling the dynamics of transmission of immunizing diseases for a closed population into bounded regular domain. Our model takes into account diffusion of population with external influx as well as one class of infected individuals. We study the well-posedness two-component diffusion equations including external supplies with Neumann conditions using upper/lower solutions and analytic semigroups. In case of constant population or not, with non-oscillatory solution and constant diffusion, this problem admits travelling wave solutions whose minimum wave speed is surveyed here.

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Color Image Encryption And Decryption Using Hill Cipher Associated With Arnold Transform, Rakesh Ranjan, R. K. Sharma, M. Hanmandlu Jun 2016

Color Image Encryption And Decryption Using Hill Cipher Associated With Arnold Transform, Rakesh Ranjan, R. K. Sharma, M. Hanmandlu

Applications and Applied Mathematics: An International Journal (AAM)

Image security over open network transmission is a big concern nowadays. This paper proposes another methodology for color image encoding and decoding using two stage Hill Cipher method which is connected with Arnold Transformation. The forgoing created a strategy for encryption and decryption of color image information and touched on just the premise of keys. In this plan, keys and the agreement of Hill Cipher (HC) are basic. Moreover, keys multiplication (pre or post) over an RGB image information framework is inevitable to know to effectively decrypt the first image information. We have given a machine simulation with a standard …

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Protein Adsorption Using A Lattice Toy Model, Ari J. Weiland May 2016

Protein Adsorption Using A Lattice Toy Model, Ari J. Weiland

Macalester Journal of Physics and Astronomy

Protein adsorption is an important subfield of Biophysics particularly relevant in medical science. Using a computational simulation with a basic but configurable two-dimensional square lattice model of approximate amino acid interactions, I investigated the entropic effects of protein adsorption on a weakly attractive surface. These simulations allow for a precise calculation of the partition functions of these complex systems, from which I can then analyze other thermodynamic properties.

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The Ecological Impacts Of Non-Native Species On River Otter Populations, Nadia Swit May 2016

The Ecological Impacts Of Non-Native Species On River Otter Populations, Nadia Swit

The Downtown Review

Most nonindigenous species invasions can have negative consequences on an environment. Trophic systems may become altered as prey sources are depleted, which can have further implications on community and habitat structure. However, some species invasions can be positive as it can provide another food source for key stone species. The effects of invasive species are reviewed in the following paper for the North American river otter (Lontra canadensis) and the Eurasian otter (Lutra lutra). In the case of the North American river, the introduction of the lake trout (Salvelinus namaycush) has negatively impacted otter …

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Lipid Content And Biomass Analysis In Autotrophic And Heterotrophic Algal Species, Addie M. Lauder, Daniel P. Jones, Thomas E. Walker, Todd Allen Apr 2016

Lipid Content And Biomass Analysis In Autotrophic And Heterotrophic Algal Species, Addie M. Lauder, Daniel P. Jones, Thomas E. Walker, Todd Allen

Montview Journal of Research & Scholarship

Biofuels are a form of renewable energy derived from living matter, typically plants. The push for biofuels began in order to decrease the amount of carbon dioxide (CO2) released into the atmosphere, as biofuels are essentially carbon neutral. The idea is the same amount of CO2 the plants took in to perform photosynthesis will then be released in the burning of the biofuels. Algae is an excellent source of biofuels because it grows quickly and is versatile in terms of the type of fuel it can produce. The two most common mechanisms for algae growth are heterotrophic or photoautotrophic. Heterotrophically …

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.3, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

Enlightened public opinion ultimately set things right in the Reserve Mining case. Following US. District Judge Miles Lord’s order of April 20, 1974 to cease all taconite tailings discharge to Lake Superior, it took much additional effort by the State of Minnesota, intervening environmental groups and the US. Government to stop the 25-year dumping of hundreds of millions of tons of tailings into the world’s fresh- water treasure. It finally happened in the spring of 1980

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.2, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.2, Uwindsor Administrator

Focus on International Joint Commission Activities

The glacial history of the Great Lakes basin and the tremendous influence of the lakes themselves create unique conditions. These support a wealth of biological diversity, including many species and communities of global significance. The basin’s sand dunes, coastal marsh- es, rocky shorelines, lakeplain prairies, savannas, forests, fens and other landscapes contain features that are either unique to or are best represented with- in the Great Lakes basin. The remark- able biodiversity of the Great Lakes basin is illustrated by the Indiana Dunes National Lakeshore. This park ranks third among US. National Parks in plant diversity, yet its area is …

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.1, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.19 Iss.1, Uwindsor Administrator

Focus on International Joint Commission Activities

In its Seventh Biennial Report on Great Lakes Water Quality (signed in 1993), released this February, the International Joint Commission again concludes that contamination by various persistent toxic substances is ' the biggest problem facing the Great Lakes ecosystem. The Governments of the United States and Canada are committed to restoring and protecting the Great Lakes and the Commission’s reports assist them by identifying progress and further needs.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.18 Iss.3, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.18 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

Drawn by a highly Visible recommendation to sunset industrial uses of chlorine, a record-setting 1,900 participants came to the International Joint Commission’s Biennial Meeting on Great Lakes Water Quality in Windsor, Ontario. Participants at the October 21-24, 1993 event also represented a broader spectrum of society than at previous biennial meetings.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.18 Iss.2, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.18 Iss.2, Uwindsor Administrator

Focus on International Joint Commission Activities

Indianapolis started it all in 1983, when 300 people joined the International Joint Commission for its first Biennial Meeting on Great Lakes Water Quality. Kingston was next in 1985, followed by Toledo in 1987, Hamilton in 1989, and Traverse City in 1991, when more than 1,600 people participated in the meeting. Now, ten years later, Windsor will host the International Joint Commission’s 1993 Biennial Meeting on Great Lakes Water Quality. Why does the Commission hold these meetings, what issues are addressed, and how can attendees participate in this year’s sessions ?

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.18 Iss.1, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.18 Iss.1, Uwindsor Administrator

Focus on International Joint Commission Activities

The Virtual Elimination Task Force, appointed by the International Joint Commission in the summer of 1990 to recommend a strategy for virtually eliminating the input of persistent toxic substances to the Great Lakes environment, has released its draft final report for public comment.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.17 Iss.3, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.17 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

When the headaches won't disappear or our child has a languishing cough, we Visit our physician to obtain a cure for our ills. As a society, studies Show that North Americans have a high level of trust in the ability of our doctors to identify possible causes and to prescribe the best solution to our ailments. How likely are our doctors to consider pollutants in our environment as a possible cause of our problems ?

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.17 Iss.2, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.17 Iss.2, Uwindsor Administrator

Focus on International Joint Commission Activities

In mid-June, Commissioner Hilary Cleveland and Commission staff visited four communities on the north shore of Lake Superior to meet with the local Remedial Action Plan (RAP) teams, Public Advisory Committee (PAC) members, RAP technical re- viewers, local news media and others interested in the cleanup plans in the four North Shore Areas of Concern: Jackfish Bay, Nipigon Bay, Peninsula Harbour and Thunder Bay.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.17 Iss.1, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.17 Iss.1, Uwindsor Administrator

Focus on International Joint Commission Activities

Thus concludes the International Joint Commission in its Sixth Biennial Report on Great lakes Water Quality, released in mid- April on the 20th anniversary of the signing of the Great Lakes Water Quality Agreement. The Commission’s report focuses on persistent toxic sub- stances, and the steps needed to reach the Great Lakes Water Quality Agreement’s goal of virtual elimination of the inputs of these substances to the Great Lakes system.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.16 Iss.3, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.16 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

Representatives from diverse interests came to discuss their concerns with the International Joint Commission and each other at the 1991 Biennial Meeting on Great Lakes Water Quality in Traverse City, Michigan, September 29 through October 2, 1991. Biennial Meetings are held by the Commission before it prepares recommendations to the Governments of the United States and Canada and the Great Lakes state and provincial governments in accordance with the Great Lakes Water Quality Agreement.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.16 Iss.2, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.16 Iss.2, Uwindsor Administrator

Focus on International Joint Commission Activities

The Grand Traverse Bay is the focal point of the northwest region of Michigan's lower peninsula, and area residents are vividly aware of its beauty and delicacy. Traverse City, a town of about 20,000 people, historically has pooled its human resources to protect its natural ones. As the International Joint Commission’s (IJC) 1991 Biennial Meeting approaches (see page 11 for registration and program information), local energies have intensified to focus on Grand Traverse Bay protection efforts, and conference participants will be impressed by the splendor of the Grand Traverse Bay and the dedication of local people to protect the bay’s …

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.16 Iss.1, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.16 Iss.1, Uwindsor Administrator

Focus on International Joint Commission Activities

The intent of these listing / delisting guidelines is to serve as indicators of use impairment for Great Lakes Areas of Concern and will be used to assist the International Joint Commission (IIC) and its Boards in: 1) making recommendations for new Areas of Concern; and 2) reviewing all stages of remedial action plans (RAPs). These guidelines are intended to establish a consistent “set of yard- sticks” that can be uniformly applied throughout the Great Lakes basin. Further, these guidelines are in— tended to help ensure that the RAP program is properly focused and pragmatic so that it clearly identifies …

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.11 Iss.3, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.11 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

As a result of the continuing high water levels on the Great Lakes,the Governments of Canada and the United States have asked the IJC to examine and report on ways to alleviate the adverse consequences of fluctuating water levels, in terms of both the immediate high level crisis and the long term consequences. Record high levels are continuing throughout most of the Great Lakes basin, except on Lake Ontario. While levels are expected to stay below recorded maximums on Lake Ontario and Lake Superior, levels on these lakes will remain high if extreme water supplies continue.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.11 Iss.2, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.11 Iss.2, Uwindsor Administrator

Focus on International Joint Commission Activities

No abstract provided.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.15 Iss.3, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.15 Iss.3, Uwindsor Administrator

Focus on International Joint Commission Activities

In a recently released joint report to the Governments of the United States and Canada, the International Joint Commission (IIC) and the Great Lakes Fishery Com— mission (GLFC) warned that additional "massive and calamitous invasions” of exotic species could occur if preventive actions are not taken immediately to stop the introduction of such species into the Great Lakes Basin Ecosystem.

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Focus On International Joint Commission Activities (Issn 0832-6673): Vol.15 Iss.2, Uwindsor Administrator Apr 2016

Focus On International Joint Commission Activities (Issn 0832-6673): Vol.15 Iss.2, Uwindsor Administrator

Focus on International Joint Commission Activities

Under the 1987 Protocol revising the 1978 Great Lakes Water Quality Agreement, the International Joint Commission (IJC) is responsible for reviewing and commenting on the adequacy of Re- medial Action Plans (RAPs) for Areas of Concern in the Great Lakes - St. Lawrence River basin. In its recently released Fifth Biennial Report on Great Lakes Water Quality, the IJC concluded that RAPS provide "a unique experiment in institutional cooperation and the first opportunity, on a broad and practical scale, to implement the ecosystem approach to environmental restoration in the Great Lakes basin."

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