The nutritive value of rangelands in Southern Darfur, Sudan could be improved by introduction and multiplication of nutritious forbs with the objective of increasing livestock production in the area. The present study...The nutritive value of rangelands in Southern Darfur, Sudan could be improved by introduction and multiplication of nutritious forbs with the objective of increasing livestock production in the area. The present study was conducted to evaluate the nutritive value and palatability of eleven range forbs collected at flowering stage from Gahzal Gawazat, Southern Darfur, Sudan using chemical analysis. The crude protein (CP) ranged from 6.8% in Oxygonum atriplicifolium with lowest digestible crude protein (DCP) 2.8% to 16.4% in Zornia diphylla with highest DCP 11.73%. The highest and the lowest crude fiber (CF) values were obtained in Commelina spp (56.4%) and Sesamum alatum (25.9%), respectively. NDF and DMI values were maximum and minimum for Zornia diphylla (44.9 and 2.67%) and Alysicarpus glumaceus (35.3 and 3.4%), respectively. The total digestible nutrients (TDN) ranged from 57.1% in Blepharis linariifolia to 69.3% in Tribulus terrestris with highest digestible energy (DE) in later while the lowest DE was obtained in Commelina spp (2.4%). The calculated in vitro organic matter digestibility (IVOMD) was highest for the Canavalia ensiformis (50.27%) and lowest value (43.17%) for Commelina spp. Zornia diphylla, Tribulus terrestris and Sesamum alatum showed highest nutritive value, while Alysicarpus glumaceus, Oldenlandia senegalensis and Chrozophora brocchiana showed highest palatability. It is concluded that these rangeland forbs are palatable and their CP and energy contents are sufficient to support different classes of livestock in South Darfur, Sudan.展开更多
Annual growth rings of roots in perennial forbs have been used in studies of climate change and the ecology of grasslands. However, little has been done in this aspect of research in China. In this study, we report th...Annual growth rings of roots in perennial forbs have been used in studies of climate change and the ecology of grasslands. However, little has been done in this aspect of research in China. In this study, we report the characteristics of growth rings in the main roots of 13 herb species sampled in Duolun of the Inner Mongolia grassland in northern China. The results show that around two thirds of the species possess clearly demarcated annual rings in the root xylem. Some species of the same genera show different patterns in anatomical structure of the root xylem. Standardized annual ring widths of three species, Potentilla anserine L., Cymbaria dahurica L. and Lespedeza daurica （Laxm.） Schindh, show a common linear trend, indicating a continued favorable growth condition in the sampling sites. Our results provide evidence that growth rings in roots of some perennial forbs in the Inner Mongolia grassland can serve as a new and useful indicator of past changes in the grassland environment.展开更多
This study takes advantage of the Forbes Rich List as an external shock to examine its effect on internal control quality in China's Mainland.Using the difference-in-differences(DiD)method for a large sample of 17...This study takes advantage of the Forbes Rich List as an external shock to examine its effect on internal control quality in China's Mainland.Using the difference-in-differences(DiD)method for a large sample of 17,910 firm-year observations from 2000 to 2014,we find that firms controlled by entrepreneurs included in the Forbes Rich List tend to have higher internal control quality than firms not controlled by entrepreneurs in the list.The listed entrepreneurs improve their firms’internal control quality by means of reducing the information asymmetry between the firms and outsiders.Further tests show that the event effect is more pronounced when firms have higher misreporting costs and when listed entrepreneurs hold chairman positions than in other situations.Our results remain robust after applying the propensity score matching method,stacked DiD estimation,and an alternative measure of internal control quality.These findings enrich the literature on the effect of the Rich List and the determinants of internal control quality in emerging markets.展开更多
福布斯最新发布的＂亚洲地区30位30岁以下领袖榜＂（Forbes 30 Under 30 Asia）中,来自上海热巢网络科技有限公司（下称＂热巢＂）的两位创始人——穆青与他的德国小伙伴Fabian von Heimburg当选广告与传媒领域青年领袖。对穆青来说,这...福布斯最新发布的＂亚洲地区30位30岁以下领袖榜＂（Forbes 30 Under 30 Asia）中,来自上海热巢网络科技有限公司（下称＂热巢＂）的两位创始人——穆青与他的德国小伙伴Fabian von Heimburg当选广告与传媒领域青年领袖。对穆青来说,这份荣誉来得并不突然。早在2016年10月,德国总理默克尔访华期间与李克强总理共同讨论德国工业4.0和中国制造2025时,热巢作为唯一中德创新创业企业被邀请参加。这让穆青引以为豪。展开更多
文摘The nutritive value of rangelands in Southern Darfur, Sudan could be improved by introduction and multiplication of nutritious forbs with the objective of increasing livestock production in the area. The present study was conducted to evaluate the nutritive value and palatability of eleven range forbs collected at flowering stage from Gahzal Gawazat, Southern Darfur, Sudan using chemical analysis. The crude protein (CP) ranged from 6.8% in Oxygonum atriplicifolium with lowest digestible crude protein (DCP) 2.8% to 16.4% in Zornia diphylla with highest DCP 11.73%. The highest and the lowest crude fiber (CF) values were obtained in Commelina spp (56.4%) and Sesamum alatum (25.9%), respectively. NDF and DMI values were maximum and minimum for Zornia diphylla (44.9 and 2.67%) and Alysicarpus glumaceus (35.3 and 3.4%), respectively. The total digestible nutrients (TDN) ranged from 57.1% in Blepharis linariifolia to 69.3% in Tribulus terrestris with highest digestible energy (DE) in later while the lowest DE was obtained in Commelina spp (2.4%). The calculated in vitro organic matter digestibility (IVOMD) was highest for the Canavalia ensiformis (50.27%) and lowest value (43.17%) for Commelina spp. Zornia diphylla, Tribulus terrestris and Sesamum alatum showed highest nutritive value, while Alysicarpus glumaceus, Oldenlandia senegalensis and Chrozophora brocchiana showed highest palatability. It is concluded that these rangeland forbs are palatable and their CP and energy contents are sufficient to support different classes of livestock in South Darfur, Sudan.
文摘Annual growth rings of roots in perennial forbs have been used in studies of climate change and the ecology of grasslands. However, little has been done in this aspect of research in China. In this study, we report the characteristics of growth rings in the main roots of 13 herb species sampled in Duolun of the Inner Mongolia grassland in northern China. The results show that around two thirds of the species possess clearly demarcated annual rings in the root xylem. Some species of the same genera show different patterns in anatomical structure of the root xylem. Standardized annual ring widths of three species, Potentilla anserine L., Cymbaria dahurica L. and Lespedeza daurica （Laxm.） Schindh, show a common linear trend, indicating a continued favorable growth condition in the sampling sites. Our results provide evidence that growth rings in roots of some perennial forbs in the Inner Mongolia grassland can serve as a new and useful indicator of past changes in the grassland environment.
文摘This study takes advantage of the Forbes Rich List as an external shock to examine its effect on internal control quality in China's Mainland.Using the difference-in-differences(DiD)method for a large sample of 17,910 firm-year observations from 2000 to 2014,we find that firms controlled by entrepreneurs included in the Forbes Rich List tend to have higher internal control quality than firms not controlled by entrepreneurs in the list.The listed entrepreneurs improve their firms’internal control quality by means of reducing the information asymmetry between the firms and outsiders.Further tests show that the event effect is more pronounced when firms have higher misreporting costs and when listed entrepreneurs hold chairman positions than in other situations.Our results remain robust after applying the propensity score matching method,stacked DiD estimation,and an alternative measure of internal control quality.These findings enrich the literature on the effect of the Rich List and the determinants of internal control quality in emerging markets.
文摘福布斯最新发布的＂亚洲地区30位30岁以下领袖榜＂（Forbes 30 Under 30 Asia）中,来自上海热巢网络科技有限公司（下称＂热巢＂）的两位创始人——穆青与他的德国小伙伴Fabian von Heimburg当选广告与传媒领域青年领袖。对穆青来说,这份荣誉来得并不突然。早在2016年10月,德国总理默克尔访华期间与李克强总理共同讨论德国工业4.0和中国制造2025时,热巢作为唯一中德创新创业企业被邀请参加。这让穆青引以为豪。
