منابع مشابه
Comparison of Three Vertical Search Spiders
T he Web has plenty of useful resources, but its dynamic, unstructured nature makes them difficult to locate. Search engines help, but the number of Web pages now exceeds two billion, making it difficult for generalpurpose engines to maintain comprehensive, up-todate search indexes. Moreover, as the Web grows ever larger, so does information overload in query results. A general-purpose search e...
متن کاملcoordination of protective schemes in distribution and subtransmission systems including distributed generation
نصب منابع پراکنده در سیستم های توزیع و فوق توزیع علاوه بر مزیت های فراوان، مشکلاتی را هم به همراه دارد. یکی از این مشکلات تأثیر این منابع روی اندازه جریان های اتصال کوتاه است. به طور معمول از حفاظت های مبتنی بر اصل جریان زیاد در سیستم های توزیع و فوق توزیع استفاده می شود. از مهمترین طرح های حفاظتی استفاده شده در فیدرهای توزیع، حفاظت فیوز- ریکلوزر است. همچنین از طرح های حفاظتی جریان زیاد جهتی در...
Vertical distribution of dioxins in soil of Bien Hoa airbase, Vietnam
Bien Hoa airbase is a known dioxin-contaminated hotspot in Vietnam. The contamination occurred during the Vietnam War at the site where dioxins were transported, stored, sprayed, and spilled in the area. Dioxins, which are cancer inducing substances, may transfer from the soil to food crops and finally to human beings living around the area. Many surveys of dioxins in soil, water, organisms, an...
متن کاملVertical Distribution of Polybrominated Diphenyl Ethers in Biosolids-amended Agricultural Soil
Polybrominated diphenyl ethers (PBDEs) are popular flame-retardants which are highly hydrophobic and ubiquitous in the environment. Elevated concentrations of PBDEs have been found in biosolids and in agricultural soils that have received biosolids in Europe and North America over the last 5 years. A study was carried out to confirm the contamination of soil by PBDEs due to biosolids applicatio...
متن کاملVertical distribution of three namatode species in relation to certain soil properties.
Population densities of Belonolaimus longicaudatus, Pratylenchus brachyurus, and Trichodorus christiei were determined from soil samples taken weekly in Tifton, Georgia during a 14-month period (except for April and May) at 15-cm increments to a depth of 105 cm. Belonolaimus longicaudatus predominately inhabited the top 30 cm of soil that was 87-88% sand, 6-7% silt, and 5-7% clay. No specimens ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Arachnology
سال: 2011
ISSN: 0161-8202,1937-2396
DOI: 10.1636/p09-75.1