| 4 | 饲喂不同磷水平及不同纤维来源对泌乳奶牛磷利用率的影响显示文摘本试验研究饲喂不同磷水平及不同纤维来源对泌乳奶牛磷利用率的影响.试验设4个处理组,2×2因子设计.磷水平为0.32%和0.46%,粗纤维来源为:10%豆皮替代6%苜蓿干草(DM计).各处理日粮均为50%玉米青贮和苜蓿青贮.32头泌乳早期或中期的荷斯坦奶牛饲喂10周.用未消化的酸性洗涤纤维作为指示剂半体内法培养12 d估测粪中排泄磷.试验组平均产奶量为43 kg/d.磷水平为0.32%和0.46%试验组产奶量分别为42.1和44.0kg/d.乳脂率分别为3.68%和4.12%,乳蛋白产量分别为1.240和1.323kg/d.0.32%磷组奶牛磷的摄人量低于NRC估测的需要量(0.37%),伴随着干物质采食量降低1.5 kg/d.粪中排泄磷随日粮磷含量的提高而呈线型提高,依据此方程,将日粮中磷的含量从0.44%降至0.37%,粪中排泄磷可降低12%.用豆皮替代部分苜蓿干草对干物质采食量和产奶量无影响,但可降低粪中磷排泄量,可能是提高了磷的表观消化率.通过降低磷的摄入量和用豆皮替代苜蓿干草的方法可以降低粪中磷排泄量.产奶量为43 kg/d的奶牛磷需要量大于0.32%(鉴于NRC的需要量为0.37%),日粮中用高消化率的非粗料纤维来源替代粗饲料纤维可以适当降低磷的供给量但又能满足营养需要. | Z.Wu 王吉峰 张乃锋 | 2005 | 中国畜牧兽医2005，32，10： | 3 |
| 14 | Cumulative material damage from train of ultrafast infrared laser pulses显示文摘We developed a systematic experimental method to demonstrate that damage threshold fluence(DTF) for fused silica changes with the number of femtosecond laser(800 nm, 65 ± 5 fs, 10 Hz and 600 Hz) pulses. Based on the experimental data, we were able to develop a model which indicates that the change in DTF varies with the number of shots logarithmically up to a critical value. Above this value, DTF approaches an asymptotic value. Both DTF for a single shot and the asymptotic value as well as the critical value where this happens, are extrinsic parameters dependent on the configuration(repetition rate, pressure and geometry near or at the surface). These measurements indicate that the power of this dependence is an intrinsic parameter independent of the configuration. | A.Hanuka K.P.Wootton Z.Wu K.Soong I.V.Makasyuk R.J.EnglAND L.Sch?chter | 2019 | High Power Laser Science and Engineering2019，7，1： | 0 |
| 15 | Design with nature and eco-city design显示文摘Designing with Nature is an approach linking design and ecology,which focuses on living with nature,caring for nature,and aiming for a sustainable society.China has made eco-city development,eco-restoration,and eco-civilization its legislative priority and its national strategy,investing a US$618 billion in a 5-year period from 2011–2015 that could reach as high as US$1,124 billion dollars in the period of 2016–2020.“Designing with nature”also means that we must,as we are dealing with resources,consider and understand all the impacting factors and ecosystem capacities.China’s biggest challenge has been to restore water quality,aquatic ecosystems,and landscape patterns.Alongside its natural resources and eco-city development,China possesses a solar energy capacity higher than that of any other country in the world,reaching 174 gigawatts by 2018.Solar power is now cheaper than fossil fuels in hundreds of Chinese cities.In this review,we affirm that the nature-driven design put forth by McHarg’s Design with Nature has withstood the test of time,and we aim to renew interest in McHarg’s ideas by arguing for a design of Chinese cities that is,in keeping with Design with Nature,future-oriented,nature-oriented,and sustainability-oriented. | Yegang Wu Robert E.Swain Nan Jiang Mengying Qiao Haihua Wang Jialin Bai Xi Zhou Xuefeng Sun Jing Xu Meng Xu Chen Hu Yimin Xing Jenny Z.Wu | 2020 | Ecosystem Health and Sustainability2020，6，1： | 0 |
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