This article aimed to find a new way to transform the graphic image (drawing, photos, etc) to the pattern parameters of female apparel with raglan sleeve. The correlation and regressive analysis were used to the data ...This article aimed to find a new way to transform the graphic image (drawing, photos, etc) to the pattern parameters of female apparel with raglan sleeve. The correlation and regressive analysis were used to the data in order to find the existing laws between them. The practical examinations demonstrated the good predictability of equations established.展开更多
了解浅水湖泊沉积物有机碳埋藏的时空分布规律及其影响因素对于深入认识这类湖泊碳埋藏过程及正确评价其在区域/全球碳循环中的作用具有重要意义。通过在巢湖东、西湖区采集沉积物柱状样,应用210Pbex-239+240Pu复合定年法建立沉积物年...了解浅水湖泊沉积物有机碳埋藏的时空分布规律及其影响因素对于深入认识这类湖泊碳埋藏过程及正确评价其在区域/全球碳循环中的作用具有重要意义。通过在巢湖东、西湖区采集沉积物柱状样,应用210Pbex-239+240Pu复合定年法建立沉积物年代序列,利用沉积物中总有机碳(TOC)、总氮(TN)、总磷(TP)、碳氮比(C/N)、常微量元素和粒度等指标,结合流域历史数据资料分析,研究了巢湖有机碳埋藏的时空变化特征及其影响因素。结果表明,210Pbex-239+240Pu复合计年法估算得到近70年巢湖沉积速率和有机碳埋藏速率的变化范围分别为0.19~0.90 g cm^(-2)a^(-1)和16.6~71.2 gC m^(-2)a^(-1),均呈现出随时间先降后增的变化趋势,且总体东部湖区均快于西部湖区;巢湖东西湖区沉积物中有机碳的来源均主要为内源,东部湖区沉积物中较快的有机碳埋藏速率主要归因于其较快的沉积速率及较深的水位阻碍了沉积物中有机碳的分解与矿化;而西部湖区则是由于强烈的人类活动带来的湖泊底泥扰动以及藻源性有机质自身的性质促进了有机碳在沉积-埋藏过程中的降解和矿化,影响了其沉积物中有机碳的有效埋藏。此外,流域增温、经济快速发展、人口数量增加、农业化肥施用量提升等流域气候变化和人类活动因素均给巢湖近70年来的有机碳埋藏带来积极影响。展开更多
Matrix effect primarily impacts the accuracy and precision of zircon LA-ICP-MS U-Pb data.This paper describes three types of matrix effect in zircon LA-ICPMS U-Pb dating,i.e.,the element matrix effect,high Ddpa or ura...Matrix effect primarily impacts the accuracy and precision of zircon LA-ICP-MS U-Pb data.This paper describes three types of matrix effect in zircon LA-ICPMS U-Pb dating,i.e.,the element matrix effect,high Ddpa or uranium matrix effect and alpha dose matrix effect,and illustrates the correction of these three effects.In addition,we point out the limitation and possible problems of the existing correction methods.展开更多
Peral millet being drought tolerant has substantial potential to contribute in food security ensuring the food, fodder and nutritional value in different Asian and African countries. Susceptibility to abiotic and biot...Peral millet being drought tolerant has substantial potential to contribute in food security ensuring the food, fodder and nutritional value in different Asian and African countries. Susceptibility to abiotic and biotic factors and low productivity are the main reasons for decreasing productivity and area of millets. In this context, evaluation of the effect of weed control practices and varying sowing dates on grain yield of kharif season grown pearl millet (Pennisetum americanum L.) was demonstrated at post graduate agriculture research station, University of Agriculture, Faisalabad during 2015. Forage pearl millet was sown at three different sowing dates i.e. mid-June, end of June and mid-July and four weed control practices viz. weedy check (no weeding), twice hoeing at 15 and 30 days after sowing (DAS), weed control using herbicides i.e. application of Atrazine (Awax 38 SC) @330 g a.i. ha-1 at 15 DAS, and twice foliar applications of 10% Sorghum water extract (Sorgaab) (at 15 and 30 DAS). The experiment was laid out in randomized complete block design (RCBD) under split plot arrangement, comprising of three replications. The treatments with varying sowing dates were randomized in main plots and weed control practices were in subplots. Results showed that the highest plant height (279.51 cm), leaf area (2777.80 cm2), fresh weight of leaves per plant (155.57 g), maximum number of grains per head (3162.0) and grain yield (3419.7 kg·ha-1) were obtained in the treatment combination of 30th June sowing × twice weed hoeing (at 15 and 30 DAS) while, maximum 1000-grain weight (8.45 g) was observed in treatments where weeds were controlled by hoeing (at 15 and 30 DAS). Moreover, cultural weed control practices reduce significantly weed density, fresh and dry Wight of weeds. In sum, it is concluded that to reduce the weed-crop competition and to gain higher productivity of pearl millet, field should be weed free 20 - 45 days after sowing.展开更多
文摘This article aimed to find a new way to transform the graphic image (drawing, photos, etc) to the pattern parameters of female apparel with raglan sleeve. The correlation and regressive analysis were used to the data in order to find the existing laws between them. The practical examinations demonstrated the good predictability of equations established.
文摘了解浅水湖泊沉积物有机碳埋藏的时空分布规律及其影响因素对于深入认识这类湖泊碳埋藏过程及正确评价其在区域/全球碳循环中的作用具有重要意义。通过在巢湖东、西湖区采集沉积物柱状样,应用210Pbex-239+240Pu复合定年法建立沉积物年代序列,利用沉积物中总有机碳(TOC)、总氮(TN)、总磷(TP)、碳氮比(C/N)、常微量元素和粒度等指标,结合流域历史数据资料分析,研究了巢湖有机碳埋藏的时空变化特征及其影响因素。结果表明,210Pbex-239+240Pu复合计年法估算得到近70年巢湖沉积速率和有机碳埋藏速率的变化范围分别为0.19~0.90 g cm^(-2)a^(-1)和16.6~71.2 gC m^(-2)a^(-1),均呈现出随时间先降后增的变化趋势,且总体东部湖区均快于西部湖区;巢湖东西湖区沉积物中有机碳的来源均主要为内源,东部湖区沉积物中较快的有机碳埋藏速率主要归因于其较快的沉积速率及较深的水位阻碍了沉积物中有机碳的分解与矿化;而西部湖区则是由于强烈的人类活动带来的湖泊底泥扰动以及藻源性有机质自身的性质促进了有机碳在沉积-埋藏过程中的降解和矿化,影响了其沉积物中有机碳的有效埋藏。此外,流域增温、经济快速发展、人口数量增加、农业化肥施用量提升等流域气候变化和人类活动因素均给巢湖近70年来的有机碳埋藏带来积极影响。
文摘Matrix effect primarily impacts the accuracy and precision of zircon LA-ICP-MS U-Pb data.This paper describes three types of matrix effect in zircon LA-ICPMS U-Pb dating,i.e.,the element matrix effect,high Ddpa or uranium matrix effect and alpha dose matrix effect,and illustrates the correction of these three effects.In addition,we point out the limitation and possible problems of the existing correction methods.
文摘Peral millet being drought tolerant has substantial potential to contribute in food security ensuring the food, fodder and nutritional value in different Asian and African countries. Susceptibility to abiotic and biotic factors and low productivity are the main reasons for decreasing productivity and area of millets. In this context, evaluation of the effect of weed control practices and varying sowing dates on grain yield of kharif season grown pearl millet (Pennisetum americanum L.) was demonstrated at post graduate agriculture research station, University of Agriculture, Faisalabad during 2015. Forage pearl millet was sown at three different sowing dates i.e. mid-June, end of June and mid-July and four weed control practices viz. weedy check (no weeding), twice hoeing at 15 and 30 days after sowing (DAS), weed control using herbicides i.e. application of Atrazine (Awax 38 SC) @330 g a.i. ha-1 at 15 DAS, and twice foliar applications of 10% Sorghum water extract (Sorgaab) (at 15 and 30 DAS). The experiment was laid out in randomized complete block design (RCBD) under split plot arrangement, comprising of three replications. The treatments with varying sowing dates were randomized in main plots and weed control practices were in subplots. Results showed that the highest plant height (279.51 cm), leaf area (2777.80 cm2), fresh weight of leaves per plant (155.57 g), maximum number of grains per head (3162.0) and grain yield (3419.7 kg·ha-1) were obtained in the treatment combination of 30th June sowing × twice weed hoeing (at 15 and 30 DAS) while, maximum 1000-grain weight (8.45 g) was observed in treatments where weeds were controlled by hoeing (at 15 and 30 DAS). Moreover, cultural weed control practices reduce significantly weed density, fresh and dry Wight of weeds. In sum, it is concluded that to reduce the weed-crop competition and to gain higher productivity of pearl millet, field should be weed free 20 - 45 days after sowing.
