نتایج جستجو برای: soil physicochemical properties
تعداد نتایج: 1043168 فیلتر نتایج به سال:
in this study, micromorphological properties of some samples collected from pedons polluted with petroleum refinery wastes and some adjacent unpolluted pedons were studied. after description of the studied pedons, disturbed and undisturbed samples were collected for physicochemical and micromorphological analyses. the results showed that the physicochemical properties (i.e. structure, bulk dens...
Soil quality can be assessed by numerous soil variables (Mausbach and Seybold 1998). In addition to physicochemical variables, biotic variables also refl ect soil quality (Pankhurst et al. 1997). Soil variables often show different patterns of response to the same impact (Jha et al. 1992), refl ecting the multidimensional quality of soil health (van Straalen 2002). These soil variables are asso...
درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...
this study was intended to evaluate the quality of 30 honey samples, in terms of physicochemical properties such as moisture content, electrical conductivity, ash content, reducing sugars and sucrose, free acidity, ph, diastase activity, and hydroxymethylfurfural (hmf) content. moreover, three methods recommended by the international honey commission for the determination of hmf, including 1) h...
saffron flower (crocus sativus) is one of the most precious spices in the world. in this respect, thesaffron style samples were gathered from the farms of torbat-heidariyeh located in south khorasanprovince during one year and their preparation was performed based on the common manufacturingstandards. then, in order to considering the international and national standards for saffron and spicese...
Data acquired from the hyperspectral airborne sensor DAIS-7915 over Antequera in southern Spain was processed to yield a quantitative soil swelling potential map based on three physicochemical soil properties currently used in engineering as measures of soil swelling namely cation exchange capacity (CEC), coefficient of linear extensibility (COLE), and Saturated moisture content (SP). The metho...
بررسی خصوصیات فیزیکوشیمیایی، مورفولوژیکی و ارزیابی تناسب کیفی خاکهای روستای سوارغیب از توابع فراشبند
پیدایش، تکامل، رده بندی، ویژگیهای مورفولوژیکی، فیزیکوشیمیایی و کانی شناسی خاکهای حوضه سوارغیب از توابع فراشبند در استان فارس با وسعت حدود 13/55 کیلومتر مربع تحت تأثیر توپوگرافی های مختلف، به عنوان یک عامل خاکساز مورد بررسی قرار گرفت. براساس روش گئوسن، رژیم حرارتی منطقه هایپرترمیک و رژیم رطوبتی منطقه اریدیک می باشد. سه واحد فیزیوگرافی شامل مخروط افکنه های واریزه ای سنگریزه دار، دشت های دامنه ای ...
چکیده ندارد.
Soil cation exchange capacity (CEC) is a parameter that represents soil fertility. Being difficult to measure, pedotransfer functions (PTFs) can be routinely applied for prediction of CEC by soil physicochemical properties that can be easily measured. This study developed the support vector regression (SVR) combined with genetic algorithm (GA) together with the adaptive network-based fuzzy infe...
Burkholderia pseudomallei is a soil-dwelling bacterium and the cause of melioidosis, which kills an estimated 89,000 people per year worldwide. Agricultural workers are at high risk of infection due to repeated exposure to the bacterium. Little is known about the soil physicochemical properties associated with the presence or absence of the organism. Here, we evaluated the soil physicochemical ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید