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Comparison of Brown midrib Sorghum with Conventional Sorghum Forage for Grazing Dairy Cows

American Journal of Plant Sciences 2014年第7期5卷 955-962页

作者： Laura Astigarraga Ana Bianco Ricardo Mello Dana Montedónico Department of Animal Production and Pastures Faculty of Agronomy University of the Republic Montevideo Uruguay

A brown midrib (BMR) sorghum pasture was compared with normal sorghum for its effects on performance of Holstein cows in midlactation in terms of milk production and composition at grazing over three periods (Period 1: 20/01 to 31/01, Period 2: 17/02 to 28/02, Period 3: 19/03 to 30/03). Forty Holstein cows were grouped according to pre-experimental milk production (22.4 ± 4.2 kg/d milk), live weight (530 ± 25 kg) and lactation stage (127 ± 63 days) and assigned randomly to one of the two experimental pasture. Pasture was assigned on equal basis at an allowance 25 kg DM/cow/day (above 10 cm), assuming a 65% forage utilization and cows received 4 kg of concentrate per day. Simultaneously, both pastures were evaluated with sheep, to analyze digestibility at every grazing period. The BMR sorghum supported higher FCM than normal sorghum (18.5 vs. 17.8 l/day, P < 0.05). Additionally, production of milk components was greater (+52 g/day/cow and +36 g/day/cow for fat and protein respectively, P 0.05), with fewer intake of concentrate (-0.4 kg/day/cow, P 0.05) when compared with cows grazing normal sorghum. Those results are in accordance with greater (P 0.05) total digestive tract DM, OM and NDF in vivo digestibilities for BMR sorghum (65.0, 67.1, 65.9 respectively) than for normal sorghum (60.3, 62.0, 61.3 respectively). The increased digestibility of BMR sorghum must be associated with the compositional differences on fiber which allowed a higher cell wall digestion. Results of this study indicate that the BMR sorghum hybrid outperformed the normal sorghum hybrid resulting in a higher performance per cow with lower concentrate consumption compared with normal sorghum.

关键词： Brown midrib Forage Sorghum Digestibility Milk Production Dairy Cows

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Origin and the Hardening Mechanism of Twinned Lenticular Martensite in a Fe-33Ni Alloy

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Acta Metallurgica Sinica(English Letters) 2023年第6期36卷 899-905页

作者： Yong Li Zuohua Wang Lihua Qian Jian Zhao Wu Zhang Ping Wei Hongwang Zhang National Engineering Research Center for Equipment and Technology of Cold Strip Rolling College of Mechanical EngineeringYanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China School of Physics Huazhong University of Science and TechnologyWuhan 430074China China Copper Huazhong Copper Cooperation Limited Huangshi 435004China College of Weaponry Engineering Naval University of EngineeringWuhan 430033China

The twinned substructure of lenticular martensite in a quenched Fe–33Ni alloy was *** contrary to the traditional viewpoint that the twinned laths come from{112}deformation twins and show insignificant hardening,we demonstrate that they are actually originated from the twinned Kurdjumov Sachs(KS)variants and can give rise to 3–4 times hardening up to~420 HV(~130 HV for the starting sample).The underlying mechanisms responsible for the propensity for twinned variants and the carbon-independent hardening for Fe–Ni system were discussed.

关键词： Twinned variants midrib Lenticular martensite Hardening mechanism Fe-33Ni

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Study on the Physiological,Cellular,and Morphological Aspects of the Postharvest Development of Cut Lily Flowers

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Horticultural Plant Journal 2021年第2期7卷 149-158页

作者： Yushan Zhang Dexin Zhong Zhanfei Liu Jiawei Gao College of Materials and Food University of Electronic Science and Technology of ChinaZhongshan InstituteZhongshanGuangdong 528400China

It is of great practical significance to study the development process of cut lily for regulating flowering and *** this study,the developmental process of lily cut flower was explored from cellular,morphological,and physiological *** morphological aspect,the tepal edge grows faster than the *** midrib groove of the flowering stage is wider than that of bud *** fast-growing edge of the petals results in the midrib bending ***,the rapid growth of the stamens and stigmas also contributes to bud *** the cellular aspect,in the bud stage there were more wrinkles in the outer epidermal cell wall of the tepal than those in the inner epidermal cell wall,indicating that asymmetric structural differences exist from the beginning of lily *** a physiological aspect,from the bud cracking stage to the senescence stage,a variety of substances in the tepal cells gradually decreased,including total nitrogen,total phosphorus,total potassium,total calcium,starch,soluble sugar,and soluble protein,but not *** results indicate that the asymmetric growth caused by this structural difference is responsible for *** wrinkles in the cell wall can be regarded as indicators of senescent cells and are caused by the degradation of the cell wall and the loss of intracellular turgor *** differences in the epidermal cells between the inner and outer tepal indicated ultrastructural changes in the tepal *** bud and flowering stages are maintained by the tepals acting as a *** flowering,the tepals gradually change from a sink to a source *** of the cut lily flowers was caused by the decomposition of intracellular compounds in the tepals and the remobilization of nutrients from the tepals to the developing organs.

关键词： cut lily epidermal cell midrib tepal wrinkle

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THE NASCENT BAINITE IN SILICON STEEL

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Chinese Science Bulletin 1990年第13期35卷 1125-1128页

作者：刘庆锁龚方岳陈玉如殷福星刘文西 Department of Material Science and Analysis Center Tianjin University Tianjin 300072 PRC

Bainite midrib was observed by LIU Wen-xi and his coworkers in 1981. They indicated that the midribs in steel were bainite shear nuclei with two dimensions. In 1986, Okamoto carried out a systematic study on bainite m... 详细信息

关键词： bainite midrib shear deformation ledge.

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