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Response of direct dry seeded rice (Oryza sativa L.) to seeding dates and seed rates
JD Rangit, S Sharma, DD Gautam
Agronomy Journal of Nepal , 2010, DOI: 10.3126/ajn.v1i0.7538
Abstract: Field studies to access seed rate, seeding dates, and weed infestation in direct dry sseded rice (Khumal -4) were carried out under rice-wheat rotation system at Khumaltar during 2005/06 -2007/08. The broadleaf weeds: Ageratum conyzoides, Commelina diffusa, Eclipta prostrata, Amaranthus veridis , Coronopus didymus, Lactuca sp. the grassy weeds: Echinochloa colona, Cynodon dactylon , and Paspalum distichum and the sedges: Cyperus difformis and C iria were recorded. E colona was the dominant weed in the second year, however A conyzoides was pronounced in the first year. A conyzoides showed an increasing trend over years and became a dominant species ranging from 2-13/0.25m 2 in the 1st year and 53 -144/0.25m 2 in the 3rd year. Significant interaction effect on total weed number/0.25 m 2 was recorded in the 2nd seeding date in all seed rates. Significantly higher weed numbers were recorded in 2nd seeding date and 20 kg/ha seed rate in the 3rd year. There was no significant interaction between different seed rate and seeding date on the gall formation due to Meloidogyne graminicola . Plant height, tillers/m 2 , number of seeds/panicle, and grain yield were not significantly affected due to seeding dates except plant height in 2005/06. Number of tillers/m 2 was significantly different among seed rates and showed slightly increasing trend with higher seed rates. But there was no significant different in grain yield among seed rates except in the year 2005/06. Dry straw weight did not show consistent results among seeding dates. The present study showed that rice seeding can be done in mid May with the seed rates 30–50 kg/ha. DOI: http://dx.doi.org/10.3126/ajn.v1i0.7538 Agronomy Journal of Nepal (Agron JN) Vol. 1: 2010 pp.16-22
Cryptocurrencies: Are Disruptive Financial Innovations Here?  [PDF]
Gautam Vora
Modern Economy (ME) , 2015, DOI: 10.4236/me.2015.67077
Abstract: Digital currencies, virtual currencies, in-game currencies, etc., have gathered a lot of attention, despite the difficulties of definition, from all corners of society for many years. Cryptocurrency has gained unprecedented attention since the birth of Bitcoin in 2009. Bitcoin is an online system of making and receiving payments in bitcoins. The system distinguishes itself by providing an open-source, cryptographically secure, confidentiality-preserving platform for transactions and/or making payments. The number of transactions as well as the number of accounts (held by individuals and businesses) is steadily increasing. A whole industry of service-providers has sprung up alongside. We consider the development of Bitcoin and its sister currencies as an important disruptive financial innovation which is here to stay unless throttled by ill-considered legislative or regulatory actions. Potential problems are analyzed and solutions offered. The overall assessment is that cryptocurrencies and variants of virtual currencies are a welcome development, they will offer competition to the existing modalities of money and governmental regulation, they will provide alternative means to economic agents for their transactions, and their innovative existence should be encouraged so that their beneficial features outperform any deleterious ones.
Role of MR and digital mammography for screening
DD Dershaw
Breast Cancer Research , 2007, DOI: 10.1186/bcr1689
Abstract: Digital mammography images the breast using the identical information obtained in screen-film mammography. The image is processed, stored and displayed electronically. This conveys several advantages over film techniques, but the approval of digital mammography by the US Food and Drug Administration has been based on comparable ability to detect cancer, not any diagnostic advantage.Four prospective studies comparing digital and film mammography on the same patients have shown that for population-based screening there is no advantage for digital over film. The last and largest of these studies [1] initially reported an advantage for several subgroups of women for digital screening. Later analysis of data from this study, however, concluded that only women with dense breasts may benefit and that screening of entire populations with digital mammography is excessively costly and not beneficial.Analysis of MR as a screening tool has been directed at women with greatly elevated lifetime risk of developing breast cancer. The ability of MR to detect a large percentage of cancers in these women earlier than mammography, sonography or physical examination and at a stage at which they should be curable has been clearly demonstrated. This has lead the American Cancer Society, along with others, to recommend the use of MR to annually screen women with at least a 20% lifetime risk of developing breast cancer starting at age 25 years. Those at less risk were not included due to lack of supporting data and concern over excessive biopsies in those women.
Recent Trends and Patterns in Nigeria’s Industrial Development
DD Ajayi
Africa Development , 2007,
Abstract: This paper analyses recent trend and spatial patterns of manufacturing in Nigeria. In particular, the paper shows that industrial development in the country involved considerable artisanal crafts firms in the early stages and grew progressively in number over the years to large-scale manufacturing. The pattern of the distribution of manufacturing industries at the city level indicates that there is a marked concentration of manufacturing establishments in the southern part of the country, and especially Lagos, Ibadan and Benin in the southwest. Other locations of relative high concentration of industrial establishments are Kano in the North; and Enugu and Port Harcourt in the southeast. Although, this paper shows that production subcontracting increased and varied amongst subcontracting firms, production subcontracting relationships are concentrated in a few locations. The paper concludes that the spatial pattern could change if industrialists adopt the strategy of industrial linkages, and especially production subcontracting which has become a driving force in contemporary industrial development efforts in the world today. It is expected that the situation could be better enhanced given the ongoing privatisation of industrial concerns in Nigeria.
“The Arabs” in the ecclesiastical historians of the 4th/5th centuries: Effects on contemporary Christian- Muslim relations
DD Grafton
HTS Theological Studies/Teologiese Studies , 2008,
Abstract: Historical inquiry into the origin and history of “the Arabs” has long been a part of Western Orientalist literature. However, Christian scholars from the 7th century onward sought to understand the rise of Islam from within a Biblical framework. This article looks at how the early church historians of the 4th and 5th centuries viewed “the Arabs” and passed on those images to their ecclesiastical descendents. It aims to argue that the pejorative image of “the Arabs” as uncultured pagan barbarians of late antiquity was extended to Muslims in the 7th century and transferred into the Latin derogatory term “the Saracen”. This negative image has been perpetuated in Western Christian literature and continues to color Western Evangelical Christian and Dispensational images of “the Arabs”. The article shows that such perceptions have as much to do with the cultural stereotypes disseminated from the ecclesiastical historians as they do with Biblical hermeneutics. HTS Theological Studies Vol. 64 (1) 2008: pp. 177-192
A detailed analysis of evolution of water rights in South Africa: An account of three and a half centuries from 1652 AD to present
DD Tewari
Water SA , 2009,
Abstract: This study reviews the changing scene of water rights in South Africa over the last three and a half centuries and concludes that they have come full circle, with some modifications, since the invoking of Dutch rule in the Cape in 1652 AD. The study stipulates that adoption of a modern rights structure is a welcome change and a progressive step taken by the democratic government; however, its success depends to a great extent on the institutional efficiency of the state which performs the role of trustee or custodian of the water resource. The responsibilities of trusteeship with respect to managing water rights or permits are met through a decentralised decision-making system. The management of water rights/permits thus depends on the administrative and judicial efficiency of organisations and government departments. Therein lurks the danger of corruption, bureaucratic inefficiency, and insecurity of permits, and hence enough potential to stifle the long-term incentives to invest in the water sector.
Should commercial forestry in South Africa pay for water? Valuing water and its contribution to the industry
DD Tewari
Water SA , 2005,
Abstract: Water is a limiting input/factor in the production of timber in the commercial forestry industry of South Africa. Being a water-stressed country, South Africa has opted for demand management strategies which suggest pricing of water as a commodity. Since commercial forestry is one of the big users of the country's water resources, it is time to decide whether the industry should now pay for water or not. The questions that need to be answered are: If yes, how much should the industry pay? Is the current proposed charge for water a fair representation of the value of water in timber production? The value of water used by the commercial forestry is essential information and is very much needed for making water-demand management decisions. The results of the study indicate that water values are much higher than the water management charge levied on the commercial forestry, confirming large subsidies being transferred to the industry. This ushers in a debate on whether South Africa should have more commercial forests or significantly convert them to grasslands. Water SA Vol.31 (3) 2005: pp.319-326
A detailed analysis of evolution of water rights in South Africa: An account of three and a half centuries from 1652 AD to present#
DD Tewari
Water SA , 2009,
Abstract: This study reviews the changing scene of water rights in South Africa over the last three and a half centuries and concludes that they have come full circle, with some modifications, since the invoking of Dutch rule in the Cape in 1652 AD. The study stipulates that adoption of a modern rights structure is a welcome change and a progressive step taken by the democratic government; however, its success depends to a great extent on the institutional efficiency of the state which performs the role of trustee or custodian of the water resource. The responsibilities of trusteeship with respect to managing water rights or permits are met through a decentralised decision-making system. The management of water rights/permits thus depends on the administrative and judicial efficiency of organisations and government departments. Therein lurks the danger of corruption, bureaucratic inefficiency, and insecurity of permits, and hence enough potential to stifle the long-term incentives to invest in the water sector.
用分子束外延生長技術來改進HgCdTe材料的特性和重復性(上)
Edwa.,DD
紅外 , 1999,
Abstract: 本文介紹了在利用分子束外延技術生長HgcdTe材料方面改進材質量、重復性和柔軟性所取得的進展.根據一定的判斷標準,對超過100生的n型外延片的載流子濃度和遷移率、晶體缺陷密度和位錯密度給出了統計數據和成品率。另外,還給出了少數載流子壽命的數據。在降低雜質濃度方面,經過不斷的改進,我們已經獲得可重復的,n型低載流子濃度:(2-10)×10^14cm^-3,而且電子遷移率很高。數據表明,低位錯密度的薄
Cornelia De Lange Syndrome: A Case Report
DD Farhoud
Iranian Journal of Pediatrics , 1985,
Abstract: A 2-month old female infant with characteristic physiognomy, eyebrows running together medially, prominent nose and flattened nasal bridge, hirsutism, bilateral simian lines of the palms, low weight and retarded development, as well as some other features of the cornelua de lange syndrome is presented. The karyotype showed normal female pattern (46 XX). She was the product of the first pregnancy of her 27-year-old clinically normal mother. The family history, pregnancy and delivery showed no remarkable points except for a renal infection with unknown treatment in the first month of pregnancy. Different aspects of the cornelia de lange syndrome are discussed.
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