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751.
Mohammad Shahidul Islam James S. Bonner Temitope O. Ojo Cheryl Page 《Environmental monitoring and assessment》2011,175(1-4):349-366
Corpus Christi Bay (TX, USA) is a shallow wind-driven bay and thereby, can be characterized as a highly pulsed system. It cycles through various episodic events such as hypoxia, water column stratification, sediment resuspension, flooding, etc. Understanding of the processes that control these events requires an efficient observation system that can measure various hydrodynamic and water quality parameters at the multitude of spatial and temporal scales of interest. As part of our effort to implement an efficient observation system for Corpus Christi Bay, a mobile monitoring system was developed that can acquire and visualize data measured by various submersible sensors on an undulating tow-body deployed behind a research vessel. Along with this system, we have installed a downward-looking Acoustic Doppler Current Profiler to measure the vertical profile of water currents. Real-time display of each measured parameter intensity (measured value relative to a pre-set peak value) guides in selecting the transect route to capture the event of interest. In addition, large synchronized datasets measured by this system provide an opportunity to understand the processes that control various episodic events in the bay. To illustrate the capability of this system, datasets from two research cruises are presented in this paper that help to clarify processes inducing an inverse estuary condition at the mouth of the ship channel and hypoxia at the bottom of the bay. These measured datasets can also be used to drive numerical models to understand various environmental phenomena that control the water quality of the bay. 相似文献
752.
Irshad Sana Xie Zuoming Mehmood Sajid Nawaz Asad Ditta Allah Mahmood Qaisar 《Environmental science and pollution research international》2021,28(15):18870-18892
Environmental Science and Pollution Research - Arsenic (As) bioremediation has been an economical and sustainable approach, being practiced widely under several As-contaminated environments.... 相似文献
753.
Ershadi Mohammad Javad Qhanadi Taghizadeh Omid Hadji Molana Seyyed Mohammad 《Environmental science and pollution research international》2021,28(23):29394-29411
Environmental Science and Pollution Research - Nowadays budget and schedule constraints have forced organizations to select six sigma projects based on pre-defined success criteria. Also,... 相似文献
754.
Panahi Fatemeh Ehteram Mohammad Emami Mohammad 《Environmental science and pollution research international》2021,28(35):48253-48273
Environmental Science and Pollution Research - The suspended sediment load (SSL) prediction is one of the most important issues in water engineering. In this article, the adaptive neuro-fuzzy... 相似文献
755.
Anser Muhammad Khalid Usman Bushra Hyder Shabir Nassani Abdelmohsen A. Askar Sameh E. Zaman Khalid Abro Muhammad Moinuddin Qazi 《Environmental science and pollution research international》2021,28(36):49820-49832
Environmental Science and Pollution Research - The study’s objective is to evaluate the impact of environmental sustainability rating, financial development, changes in the price level and... 相似文献
756.
Amiri Vahab Li Peiyue Bhattacharya Prosun Nakhaei Mohammad 《Environmental science and pollution research international》2021,28(14):17546-17562
Environmental Science and Pollution Research - The concentration of total dissolved mercury (HgT) in surface and groundwater resources in the coastal parts of Urmia aquifer (NW of Iran) was... 相似文献
757.
Homayonibezi Nasrin Dobaradaran Sina Arfaeinia Hossein Mahmoodi Marzieh Sanati Ali Mohammad Farzaneh Mohammad Reza Kafaei Raheleh Afsari Maryam Fouladvand Moradali Ramavandi Bahman 《Environmental science and pollution research international》2021,28(12):14882-14892
Environmental Science and Pollution Research - This work aimed to explore the concentration of nickel, manganese, iron, copper, chromium, and lead in the milk of goat herds in the industrial area... 相似文献
758.
Future production of rainfed wheat in Iran (Khorasan province): climate change scenario analysis 总被引:1,自引:0,他引:1
Mohammad Bannayan Ehsan Eyshi Rezaei 《Mitigation and Adaptation Strategies for Global Change》2014,19(2):211-227
Projecting staple crop production including wheat under future climate plays a fundamental role in planning the required adaptation and mitigation strategies for climate change effects especially in developing countries. The main aim of this study was to investigate the direction and magnitude of climate change impacts on grain yield of rainfed wheat (Triticum aestivum L.) production and precipitation within growing season. This study was performed for various regions in Khorasan province which is located in northeast of Iran. Climate projections of two General Circulation Models (GCM) for four locations under three climate change scenarios were employed in this study for different future time periods. A stochastic weather generator (LARS-WG5) was used for downscaling to generate daily climate parameters from GCMs output. The Decision Support System for Agrotechnology Transfer (DSSAT) Version 4.5 was employed to evaluate rainfed wheat performance under future climate. Grain yield of rainfed wheat and precipitation during growth period considerably decreased under different scenarios in various time periods in contrast to baseline. Highest grain yield and precipitation during growth period was obtained under B1 scenario but A1B and A2 scenarios resulted in sharp decrease (by ?57 %) of grain yield. Climate change did not have marked effects on evapotranspiration during the rainfed wheat growth. A significant correlation was detected between grain yield, precipitation and evapotranspiration under climate change for both GCMs and under all study scenarios. It was concluded, that rainfed wheat production may decline during the next 80 years especially under A2 scenario. Therefore, planning the comprehensive adaptation and mitigation program is necessary for avoiding climate change negative impact on rainfed wheat production. 相似文献
759.
Mohammad Hossein Keshavarz Narges Zohari Seyed Abolfazl Seyedsadjadi 《Journal of Loss Prevention in the Process Industries》2013,26(6):1452-1456
This study presents a new simple correlation between electric spark sensitivity of nitramines and their activation energies of thermolysis, which are important for safety measures in industrial processes. The new correlation can help to elucidate the mechanism of initiation of energetic materials by electric spark. It can be used to predict the magnitude of electric spark sensitivity of new nitramines, which is difficult to measure. The methodology assumes that electric spark sensitivity of a nitramine with general formula CaHbNcOd can be expressed as a function of its activation energy of thermal decomposition as well as optimized elemental composition and the contribution of specific molecular structural parameters. The new correlation has the root mean square and the average deviations of 1.37 and 1.09 J, respectively, for 21 nitramines with different molecular structures. The proposed new method is also tested for 16 nitramines so that there is no experimental data of electrostatic sensitivity for them. 相似文献
760.
Cutoff grade specifies the available supply of metallic ore from an open pit mine to the multiple processing streams of an open pit mining complex. An optimal cutoff grade strategy maximizes the net present value (NPV) of an open pit mining operation subject to the mining, processing, and marketing/refining capacity constraints. Even though, the quantities of material flowing from the mine to the market are influenced by the expected variation in the available metal content or inherent uncertainty in the supply of ore, the majority of cutoff grade optimization models not only disregard this aspect and may lead to unrealistic cash flows, but also they are limited in application to an open pit mining operation with single processing facility. The model proposed herein determines the optimal cutoff grade policy based on a stochastic framework that accounts for uncertainty in supply of ore to the multiple ore processing streams. An application on a large-scale open pit mining operation develops a unique cutoff grade policy along with a portfolio of mining, processing, and marketing/refining rates. Owing to the geological uncertainty, the approach addresses risk by showing a difference of 14% between the minimum and maximum production rates, cash flows and NPV. 相似文献