population studies 中文意思是什麼

population studies 解釋
人口問題研究
  • population : n. 1. 人口;人口總數;全體居民;人口的聚居。2. 物的全體[總數];【生物學】蟲口;種群(量);群體;族,組,個數;【統計學】對象總體,全域。3. 【物理學】布居;密度。4. 〈罕用語〉殖民。
  • studies : 哥倫比亞大學
  1. Studies by hargrave and geen estimated natural community graz - ing rates by measuring feeding rates of individual zooplankton species in the laboratory and then computing community grazing rates for field conditions using the known population density of grazers

    由哈格雷夫( hargrave )和吉恩( geen )所進行的研究,對自然條件下的群落食草比例進行了估計,其手段是通過測量出實驗室內單獨的浮遊動物種類的結食比例,然後利用已知的食草動物種群密度,計算出實地狀況下的群落食草比例。
  2. The trend is refered to combine the evidence from several genes representing both nuclear and organella genomes with morphology, ontogeny and life history for systematic studies ; while studies at the population level by applying molecular techniques with high differenciation lead an important direction

    指出同時應用能夠代表核和細胞器基因組的多個基因結合形態、個體發育和生活史進行系統學分析是其必然發展趨勢;而應用高解析度的分子手段進行居群研究是一個重要的發展方向。
  3. Studies on field population dynamics of aceria litchii keifer

    荔枝瘤癭蟎田間種群數量動態研究
  4. The six part puts forward the design principles and studies the design methods that adapt to the settlement pattern of the floating population. the thesis also takes the chongqing rentable housing and the rebuilding of shenzhen fisherman ' s village as the research cases

    第六部分:提出流動人口住居設計的原則,探討適合流動人口生活模式的住宅設計手法,並以重慶可出租住宅和深圳漁民村改造為實例。
  5. This paper concerns studies on rhizobia in symbiosis with important legume soybean and peanut crops in china, following : 1 ) summarized bio - diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, and strain - host promiscuity and compatibility from large and small samples. 2 ) reviewed symbiont improvement in both sides of rhizobia and hosts, involving selection of effective rhizobial strains, evoluation and utilization of the host germplasm for symbiotic properties, and selection of the both sides for special characters. 3 ) discussed the subject on the rich symbiont germplasm resource in china and on further research being necessary to exploitation and utilization of the benificial germplasm

    針對我國主要豆科作物大豆和花生的研究成果,並結合本身研究工作內容, ( 1 )總結了與宿主共生的根瘤菌生物學多樣性,包括大、小樣本的土著根瘤菌群體數量、分離頻率、類型與分佈及其菌株宿主共生混交性與親和性; ( 2 )評述了根瘤菌宿主植物共生體雙邊固氮改良,包括優良菌株的選育、宿主品種資源共生特性的評價與利用及特異性狀的選擇; ( 3 )討論了我國這一類共生體資源的豐富性以及有必要進一步加大力度研究有益資源的開發和利用的問題。
  6. Abstract : this paper concerns studies on rhizobia in symbiosis with important legume soybean and peanut crops in china, following : 1 ) summarized bio - diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, and strain - host promiscuity and compatibility from large and small samples. 2 ) reviewed symbiont improvement in both sides of rhizobia and hosts, involving selection of effective rhizobial strains, evoluation and utilization of the host germplasm for symbiotic properties, and selection of the both sides for special characters. 3 ) discussed the subject on the rich symbiont germplasm resource in china and on further research being necessary to exploitation and utilization of the benificial germplasm

    文摘:針對我國主要豆科作物大豆和花生的研究成果,並結合本身研究工作內容, ( 1 )總結了與宿主共生的根瘤菌生物學多樣性,包括大、小樣本的土著根瘤菌群體數量、分離頻率、類型與分佈及其菌株宿主共生混交性與親和性; ( 2 )評述了根瘤菌宿主植物共生體雙邊固氮改良,包括優良菌株的選育、宿主品種資源共生特性的評價與利用及特異性狀的選擇; ( 3 )討論了我國這一類共生體資源的豐富性以及有必要進一步加大力度研究有益資源的開發和利用的問題。
  7. Identifiability, filtration and biologic characteristics observation of three fly species in harbin of china were narrated, and it was evaluated to these fly species " larva and imago nutrition in this paper. studies results showed that lucilia sericata meigen, aldrichina grahami aldrich and parasarcophaga crassipalpis macquart are excellent fly species in population. the excellent fly species have regular succession phenomenon as seasonal and temporal changement

    室內、室外試驗觀察發現,絲光綠蠅( luciliasericatameigen ) 、巨尾阿麗蠅( aldrichinagrahamialdrich )和肥須亞麻蠅( parasarcophagacrassipalpismacquart )在種群數量上具有優勢,並隨季節時間變化,其幼蟲種類具規則的演替現象。
  8. This paper briefly reviews the possible effects of climate change on avian biology and ecology all over the world, with emphasis on new findings from several long - term studies in europe and north america, which provide unique opportunities to investigate how long - term changes in climate affect birds at both individual and population levels

    根據全球范圍內氣候變化對鳥類影響的研究資料,尤其是北美和歐洲的一些長期研究項目的成果,綜述了氣候變化對鳥類分佈范圍、物候、繁殖和種群動態變化等方面的可能影響。
  9. Studies of intersectional labor flow, ranging from the classical lewis ' model of " dual structure " population flow to todaro ' s model of three - sector population flow, have been conducted against the background of rapidly expanding industrialization, quickly developing cities and highly elastic demand for labor in cities

    摘要從劉易斯經典的「二元結構」人口流動模型到托達羅的三部門人口流動模型,對勞動力在部門間流動的研究都是在工業化迅速擴張、城市快速發展、城市對勞動力需求彈性很大的背景下進行的。
  10. This paper analyses and studies the fundamental states and existing questions of wuyishan national natural protection areas, and argues the dialectical relationships of contradiction and unity between the protection of natural resources and environment and the development of economics. and proposes the value - increasing development strategy which will make wuyishan national natural protection areas sustainably develop in term of both time and space. and further illustrates these questions of population emigration, information - network construction, height - grade ecological tourism, etc

    本文針對武夷山自然保護區的基本情況和存在的問題進行了深入分析和研究,論證了保護自然資源和環境與發展經濟既相矛盾又相統一的辨證關系,提出了建立價值增長型的自然保護區的發展戰略,使武夷山自然保護區在時間上和空間上都能達到可持續地發展,並在此基礎上,闡述了人口的外遷、信息網路建設、高品位生態旅遊等問題。
  11. On the basis of the problems of the current traffic volume forecast on the high - type highway in our country. this paper has a survey on hebei province ' s and handan city ' s current traffic volume on the high - type highway and their geographical locations, natural resource distributions, social economy and population growing and studies these relative elements with traffic volume

    本文基於我國目前高等級公路交通量預測中存在的問題,對河北省暨邯鄲市現有的高等級公路交通量的增長、分佈情況,及其地理位置、自然資源分佈、社會經濟、人口增長等影響交通量的主要因素進行調查研究。
  12. Studies on population ecology showed that d. versipellis is able to grow on the hillsides of subtropical broadleaf or acicularleaf secondary forest where soil is fertile and the content of n, p, k is high and the ph is 5. 49 - 6. 59

    種群生態研究表明八角蓮適宜生長的土壤為中性偏酸( ph5 . 49 6 . 59 ) 、有機質含量為7 . 34 33 . 33和n 、 p 、 k養分含量高的黃棕壤;其生長環境的植被為亞熱帶針葉混交林,伴生植物多為當地優勢種。
  13. Studies on parameters experiment population life table to analyze factors causing outbreaks of pest mites in moso bamboo forests

    從實驗種群生命表的參數分析毛竹害蟎暴發成災的成因
  14. Studies on the heterogeneity of spleen colony - forming cell population

    脾結節生成細胞cfc - s特性的研究
  15. Studies on key influencing factors on the dynamics of natural population of rhopalosiphum padi linnaeus

    影響禾穀縊管蚜自然種群變動的關鍵因素研究
  16. While bearing in mind the limitation of the study, ie the population of these two studies was people who had some sort of problems and came forward for counselling service, the results do suggest that frequent absence from home may cause conflicts and communication breakdown in one s marriage and other family problems

    這兩次研究的樣本均來自接受服務的案主,他們的家庭曾出現某些問題,故此抽樣偏誤的情況可能發生。因此,這兩次研究的結果並不能夠代表香港家庭的整體狀況。
  17. Cancer registries are a primary source for unbiased population - based case control studies, the end points for cohort studies and clinical trials - - and perhaps most importantly, the beginning point for survival analysis

    癌癥登記處是一個無偏倚基於人群病例對照研究的原點,群組研究和臨床試驗的終點也可能是最重要的生存分析的起點。
  18. Recent studies have indicated that psa - based screening of older population for organ - confined early stage prostate cancer is an acceptable, practical and reliable modality

    近期研究顯示以前列腺特定抗原為基礎作為老人早期局限性前列腺癌篩選是一可被接受、可行且可靠之方法。
  19. In order to make y - str markers more widely accepted, population studies and robust assays are required. we focus on developing new multiplex pcr for y - str loci that can be detected by sliver staining system and fluorescent system

    本課題旨在通過研究復合擴增技術,構建四個y - str基因座的復合擴增銀染檢測體系和復合擴增熒光檢測體系,並對其進行法醫學可行性研究和群體遺傳研究。
  20. A number of population studies have revealed that moderate drinkers of red wine have less heart disease than non - drinkers

    相當多人口研究已經揭示與不飲紅葡萄酒者相比較,飲紅葡萄酒不過量的人較少得有心血管疾病。
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