China is a populous agricultural country, the arable land is the most basic resources which is needed for agricultural production, the quality of arable land has a direct impact on the entire agricultural production and development ,so to carry out the Evaluation of Farmland is a very important foundation work which is advantage to know china’s arable land resources and to improve the efficienc...

football is the most popular sport in developed countries which has a major share of the total sports industry market. in this study we used to determining the pricing equation premier of league football players of iran based on ordinary least squares. research tools were include of three achieved questionnaires that content validity was confirmed during the several meeting and discussed and re...

Background: The association between use of nonsteroidal anti-inflammatory drugs (NSAID), including aspirin, and risk of pancreatic cancer is controversial. We did a metaanalysis to summarize available evidence from epidemiologic studies investigating the relation between use of aspirin or other NSAIDs and the risk of pancreatic cancer. Methods: We identified potential studies by searching the M...

Several studies have shown that feeding of an energy-dense diet over short periods to cull cows could be profitable in terms of increased saleable yield and improved carcass conditions. Although the application of growth promoters, such as anabolic implants and beta agonists, in finishing of cull cows have been recorded, there is no conclusive evidence as to the timing and duration of beta agon...

for (Z',Xk') $ (Zk , Xk"), A , Zk < 1 (lb). For every point (Z1,Z20), ZK0 = hKk(ZkoXko) ZkAol < 1, and for every sufficiently small neighborhood U of this point, there exists o> 0 such that the set of points of b3 which belong to U consists only of points (1) for which Zk-Zkol < a and XXkol < a hold, (lc). For a fixed k and Xk, the corresponding set of points (1) is called a lamina of ek3 and i...

Evolutionary biology Comment Human parental age difference and offspring count: and we still do not know what men or women want Two recent studies (Fieder & Huber 2007; Helle et al. 2008) present data on optimal age differences of human couples and show a hump-shaped relationship between parental age difference and lifetime offspring count. Boyko (2008) thereafter correctly pointed out that sex...

Fine-scale (3rd and 4th order) segments of the mid-ocean ridge (MOR) are morphologically defined units of crustal accretion with enigmatic origins. At fast-spreading centers, 3rd order segments are bounded by discontinuities in the structure of the axial high. Most 3rd order segments are 20F10 km long, and terminate at ridge axis discontinuities (RADs) exhibiting 0.2–3 km lateral offsets and/or...

The detrimental effects of increased intra-abdominal pressure (IAP) on kidneys and other intra-abdominal organs have been known for a long time, particularly in postoperative conditions [1]. In recent decades, the significance of intra-abdominal hypertension (IAH) has been increasingly recognized because it is much more prevalent than expected and is associated with increased morbidity and mort...

This paper presents a few ideas on how to solve certain geometrical problems arising very often in character design, not directly solvable by METAFONTs plain macros. The first part of the paper presents two geometrical problems: the “k problem” and the “x problem”, their solutions using dichotomy, and a different solution using path intersections. The latter was proposed earlier on the net by t...