共查询到20条相似文献，搜索用时 78 毫秒
1.
薏苡(Coix)作为我国最早栽培的作物品种,这一事实可从许多证据得到证考;甲骨文作为最早记载人类活动的文字之一,不仅推动了人类文明的进程,也最早记载了作物产量株的构成。文章通过大量文献资料对这一事实进行了判定及证考,推定出了甲骨文记载的作物产量公式的要素,即密度(穗数)、穗粒数、籽粒重(千粒重),是最早记载作物产量构成公式的三要素,鉴于篇幅所限,本文只讨论密度(株、穗数)之内容。 相似文献
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The discovery of butchered and modified bones of extinct Pleistocene fauna from Old Crow Flats, Yukon Territory, and the Dutton and Selby sites, Colorado, provides some of the earliest evidence for man in the New World. However, the significance of these discoveries rests entirely on the ability to determine whether these remains were modified by man. The results of experiments of elephant butchering, bone fracturing, and bone tool manufacturing support the hypothesis that these modified bones can be used to identify the presence of cultural activities. 相似文献
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筋骨并重是平乐正骨主要学术思想之一,平乐正骨把筋骨并重思想贯穿于骨伤治疗的始终。理论上平乐正骨注重“筋骨”并重,认为人体筋骨相互依赖、相互影响;整复、固定手法上平乐正骨强调骨折固定时要护筋、用筋、调筋,要“动静结合”;辨证用用药上平乐正骨遵循肝肾同治、筋骨并重。但平乐正骨筋骨并重思想并非一蹴而就,是在《黄帝内经》《诸病源候论》《医宗金鉴》以及现代医学等历代理论发展与临床实践的影响下逐渐形成并成熟的。因此,从中医学及现代生物力学探讨平乐正骨“筋骨并重”学术思想的源流,有助于理解平乐正骨学术思想的内涵。 相似文献
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西藏有丰富多彩的茶文化,其茶园面积也在快速增加,茶产业正快速发展。目前,从“人-经济-社会”的三维角度看,西藏茶文化尚未得到有效开发和利用,但却十分必要。其必要性来自于更宏大的机制。本文核心脉络是从西藏茶及其文化的的生态性、文化性、产业性,生态旅游的可行性与功能性分析等多个角度展开对西藏文化产业“三维成长与动力理论”模型的解读,并引出关于对人类社会的“人-经济-社会”的三角正反馈互构机制的讨论。本文认为:西藏茶及其文化具备生态基因,主要表现在三个方面:茶叶在西藏的出现是人与生态环境博弈的重要结果、茶叶在西藏的使用生动地体现了人与自然的关系、西藏的茶叶贸易受生态性的制约;西藏茶文化与产业结合形成茶文化产业有其必要性和可行性;在“三维成长与动力理论”模型中,生态是吸引力与基础,文化是精华与“密码”,而旅游则是纽带与筋骨,西藏茶文化产业是对“生态+文化+旅游”三维成长与动力理论模型的一项较好的检验;三个主要维度的讨论肯定了西藏茶文化生态旅游在该理论模型中的功能与发展路径;推进西藏茶文化产业的发展不但符合“美丽西藏”建设范畴,而且从“人-经济-社会”的三角正反馈互构取向看,它也是“美丽西藏”建设的重要动力和活力;该三角正反馈互构取向呼唤着关注人类社会终极方向和价值。 相似文献
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Non Nok Tha is a prehistoric site in northeast Thailand. The radiocarbon dates suggest that it was first occupied by at least 3500 B.C., and possibly as early as 5000 B.C. The deepest levels contain unexpectedly early evidence for rice cultivation and bronze casting. Multivariate and cultural analyses of the bovine bones suggest that the first inhabitants raised domesticated cattle. This is among the earliest evidence for bovine domestication known. 相似文献
6.
建川杂交鸭生长期适宜锰添加量的研究 总被引：1，自引：0，他引：1
乐国伟 《四川农业大学学报》1991,9(4):591-597
继前期试验,选用六周龄建昌、四川麻鸭杂交鸭54只,在常用饲粮的条件下,观察补锰水平为0,20,40,50,60和80ppm对,对肉鸭增重、血清、胫骨,肝脏等组织锰含量,含锰超氧化物歧化酶(Mn-Superoxide Dis mutase,Mn SOD)活性,血清碱性磷酸酶(Alkaline Phosphatase.AKP)活性,胫骨皮髓宽度比和骨骼钙状况的影响。结果表明,添加40ppm锰能满足鸭正常生长的需要。肝脏和SOD可以反映机体锰状况,AKP反应不灵敏、胫骨皮髓宽度比可反映出锰对骨骼发育的影响。 相似文献
7.
冯静 《农业图书情报学刊》2015,27(8):94-98
丰富多彩的文化是人类文明发展过程中诞生的结晶,文化对人类的影响,在文化传播、交流的过程中得以体现。图书馆作为现代社会重要的社会文化机构,其在促进文化资源流动、重组及文化传播交流活动中具有关键性作用。本文主要从图书馆在社会先进文化传播交流中的地位,图书馆是社会文化传播与交流的重要场所,图书馆为社会文化传播与交流搭建了平台,图书馆促进多元文化乃至跨文化交流,图书馆促使社会文化传播与交流充满生命力,图书馆建筑环境拥有强大的文化感染力六个方面分析图书馆在社会文化传播与交流中的作用。 相似文献
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Diving mosasaurs, plesiosaurs, and humans develop dysbaric osteonecrosis from end-artery nitrogen embolism ("the bends") in certain bones. Sixteen sperm whales from calves to large adults showed a size-related development of osteonecrosis in chevron and rib bone articulations, deltoid crests, and nasal bones. Occurrence in animals from the Pacific and Atlantic oceans over 111 years made a pathophysiological diagnosis of dysbarism most likely. Decompression avoidance therefore may constrain diving behavior. This suggests why some deep-diving mammals show periodic shallow-depth activity and why gas emboli are found in animals driven to surface precipitously by acoustic stressors such as mid-frequency sonar systems. 相似文献
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邢毅 《农业图书情报学刊》2009,21(2):111-113
在遥远的历史长河中,人类创造和运用了符号系统,创造出记录语言的文字。同时,人类开始多方寻找文字符号赖以存在的有形载体：甲骨、青铜器、石头、简牍、缣帛……只有当文字符号找到了恰当的载体时,才形成＂书＂。于是,便有了图书馆。 相似文献
11.
Villa P Bouville C Courtin J Helmer D Mahieu E Shipman P Belluomini G Branca M 《Science (New York, N.Y.)》1986,233(4762):431-437
Cannibalism is a provocative interpretation put forth repeatedly for practices at various prehistoric sites, yet it has been so poorly supported by objective evidence that later, more critical reviews almost invariably reject the proposal. The basic data essential to a rigorous assessment of a cannibalism hypothesis include precise contextual information, analysis of postcranial and cranial remains of humans and animals, and detailed bone modification studies. Such data are available from the Neolithic levels of the Fontbrégoua Cave (southeastern France) where several clusters of human and animal bones have been excavated. The analysis of these bones strongly suggests that humans were butchered, processed, and probably eaten in a manner that closely parallels the treatment of wild and domestic animals at Fontbrbégoua. 相似文献
12.
Bone resorbing activity in supernatant fluid from cultured human peripheral blood leukocytes 总被引：41，自引：0，他引：41
J E Horton L G Raisz H A Simmons J J Oppenheim S E Mergenhagen 《Science (New York, N.Y.)》1972,177(51):793-795
A new soluble mediator was found in supernatant fluid from cultures of human peripheral blood leukocytes that were stimulated by phytohemagglutinin, or by antigenic material present in human dental plaque deposits. This soluble Jactor produced bone resorption in organ cultures of fetal rat bones as measured by increased release of calcium-45, and also increased the number of active osteoclasts. 相似文献
13.
严静 《福建农业大学学报(哲学社会科学版)》2010,(1):7-10
在海西发展的新时期,乡村文化精英作为乡村再造的人力资源基础,是乡村发展的关键因素。针对乡村文化精英的流失和农村人力资源再造的现实冲突,坚持乡村文化精英培育的可持续性,急需理顺若干问题,在政策和技术层面先行先试,鼓励乡村能人返乡并创造良好的系统综合环境,并挖掘乡村文化精英资源,打造文化扶贫产业,全方位提升民生质量。 相似文献
14.
Radiocarbon dating of petroleum-impregnated bone from tar pits at Rancho La Brea, California 总被引：1，自引：0，他引：1
A liquid-chromatography method has been developed for the separation of amino acids with the same specific activity in radiocarbon from bones impregnated with isotopically dead petroleum compounds found in the La Brea tar pits. This technique permits the application of radiocarbon dating to such bone assemblages. 相似文献
15.
古村落是历史长河中文化多样性的物质表现,它具有深厚的历史文化内涵,一方面体现了人与自然环境和谐的人居环境;另一方面体现了传统文化的固有价值。临沣寨,作为河南中部平原低洼地区的一个小村落,有着小巧精致、保存完好的特色,是一定时期该地区常见的村寨形式,具有很好的历史、文化价值。 相似文献
16.
The strength and integrity of our bones depends on maintaining a delicate balance between bone resorption by osteoclasts and bone formation by osteoblasts. As we age or as a result of disease, this delicate balancing act becomes tipped in favor of osteoclasts so that bone resorption exceeds bone formation, rendering bones brittle and prone to fracture. A better understanding of the biology of osteoclasts and osteoblasts is providing opportunities for developing therapeutics to treat diseases of bone. Drugs that inhibit the formation or activity of osteoclasts are valuable for treating osteoporosis, Paget's disease, and inflammation of bone associated with rheumatoid arthritis or periodontal disease. Far less attention has been paid to promoting bone formation with, for example, growth factors or hormones, an approach that would be a valuable adjunct therapy for patients receiving inhibitors of bone resorption. 相似文献
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农耕社会与原生态文化的特征 总被引：2，自引：1，他引：1
Original ecological culture is a cultural form in the period which agriculture occurred in.It is the relative nature of cultural forms that human created to meet the nature,and is a way of life in agricultural age of mankind.Agricultural society refers to the social form in which farming is the main mode of production patterns.Nature,stability,self-sufficiency is an important farming society feature.Farming community is an ancient form of society,the original ecological culture is a cultural form that produ... 相似文献
19.
Stokstad E 《Science (New York, N.Y.)》2000,289(5479):530-531
Some 110 scientists from a range of disciplines gathered in the overcast British midlands for the 5th International Ancient DNA Conference, held here from 12 to 14 July. Among the attractions were new insights into the diets of early Americans gleaned from ancient human coprolites and intriguing reports of nuclear DNA and ancient viral sequences extracted from mammoth bones. 相似文献
20.
通过对文献资料反复的全方位的考证,结合植物形态学、解剖学、生态学和进化学的直接观察,判定了甲骨文薏苡栽培种的形态并隶定为。 相似文献