Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time
隨后以這幾種重金屬作為實驗毒物,以鯽魚為實驗動物,應用環境生物技術、火焰原子吸收分光光度法、
鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微
結構的影響等,全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響,初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響,為制定漁業生產上預防性的管理措施提供科學依據,及時避免或減輕重金屬污染對水生生態系統造成的損害。
From inside information extending over a series of years mr bloom was rather inclined to poohpooh the suggestion as egregious balderdash for, pending that consummation devoutly to be or not to be wished for, he was fully cognisant of the fact that their neighbours across the channel, unless they were much bigger fools than he took them for, rather concealed their strength than the opposite
根據經年累月的內幕消息,布盧姆先生頗傾向于把上述見解看作是荒謬透頂的胡言亂語,嗤之以鼻因為姑且不論他是否衷心企盼那樣一種
結局154 ,對這一事實他總是了如指掌:除非海峽對岸的那些
鄰人遠比他所設想的還要愚蠢,否則與其認為他們在顯示實力,毋寧說是藏而不露。
The benediction closes the service, and then, as the organ plays a postlude, everybody turns to greet his neighbors.
最後以祈禱祝福
結束了禮拜,在風琴彈奏中,各人都轉向
鄰座的人招呼問好。
The blastn results show that gyn - 15 is closely related to a symbiont of anemones, s. californium, and the free - living strain, gymnodinium varians. sequence comparison show that the similarities among each part of the sequences from these three strains are all above 99 %. phylogenetic reconstruction with neighbor - joining ( nj ) method using sequences of variable regions ( v1 + v2 + v3 ) of ssu rdna indicated that gyn - 15, s. californium and g. varians form a new clade with 100 % bootstrap support
以ssurdna序列中的三個可變區( vz + vz + v3 )和
鄰接法困eighbor一joiningmethod , nj法)構建共生甲藻屬的系統進化樹表明, gyn一巧與5 . cal扣rnium和g . varian :在共生甲藻屬內構成一個獨立的、自檢支持百分率為100 %的子類群( clade ) ,根據這些
結果可將gyn一巧初步鑒定為屬于共生甲藻屬。
In these chloroplasts carbon dioxide combines with phosphoenolpyruvate to form oxaloacetic acid, which is transported to the bundle sheath cells, where the carbon dioxide is released, then fixed by the enzyme ribulose bisphosphate carboxylase to form glycerate 3 - phosphate, the first step in the calvin cycle
在葉肉細胞的葉綠體中二氧化碳與磷酸烯醇丙酮酸
結合形成草酰乙酸,后被運到
鄰近的維管束鞘細胞,在那裡二氧化碳被釋放,后被核酮糖二磷酸羧化酶固定形成3磷酸甘油酸,這是卡爾文的循環第一步。
The granulomatous lesions, regardless of location, result in enlargement of the part and often encroachment on adjacent tubular of cavernous structures.
在不引人注意的部位,肉芽腫的損害導致局部腫大,並往往侵害
鄰近的管狀或腔狀
結構。
John chummed with the new nieghbor ' s children
約翰跟新來的
鄰居小孩
結成搭檔。
The main results are as follows : 1. the circumpolar distribution, abundance and growing condition of euphansia snperba the author studied the euphansia superba samples obtained during 1992 1993, 1997 1998 and 1999 2000 chinese antarctic expedition. the results show that the circumpolar distribution pattern of euphausia superba was obvious, it was mainly distributed in two regions, the weddell sea region ( 0 - 80 w ) and the prydz bay region ( 45 - 90 e ), also we obtained some samples in the ross sea region ( 145 - 180 w )
大磷蝦的環南極分佈研究:對中國南極考察1992 / 1993 , 1997 / 1998 , 1999 / 2000三個環南極航次的大磷蝦樣品的分析
結果表明,大磷蝦環南極分佈主要集中在兩個海區:威德爾海區( 0 ? 80 w )和普里茲灣及其
鄰近海域( 45 ? 90 e ) ,另外在羅斯海外海區( 145 ? 180 w )也有少量的大磷蝦分佈。
As it can be expressed easily by argument equations, we use the conicoid as the criteria of points " classification. based on the point ' s normal and the adjacent field, corresponding to the conicoid equation such as plane, ball and cylinder, we search the points that fit the equation along the adjacent field. using this method, we realized the automatic classification of unorganized points
本文採用了可以比較方便地用參數方程表示的二次曲面作為數據點的分類標準,根據點的法向量以及其
鄰域
結點的各種屬性,對應于平面、球面、柱面等二次曲面,依據曲面方程的特點,從起始點開始沿
鄰域深度優先遞歸尋找符合方程的數據點,實現了散亂數據點的自動分類。
That lady was at deep enmity with her neighbours.
這個婦人與
鄰居
結怨甚深。
A new model of distribution system is presented, whereby, the feeder switches are regarded as the vertcxes of a graph and the feeder lines are regarded as the arcs. the method to model distribution networks by adjacent table is put forward. therefore, storage size is reduced and calculation is speeded up
建立了配電網的簡化模型,即將饋線開關當作圖的頂點、將饋線當作弧,採用等長
鄰接表的數據
結構來描述配電網,大大減少了佔用空間和提高了查詢速度,並建立了基於等長
鄰接表的配電網路拓撲演算法。
The slab has provided greater fixity to the top flange, and the adjacent web gap has experienced greater deformation and has cracked first.
橋石板為上翼緣提供了很大的固
結度,於是相
鄰的腹板間隙就經受了較大的變形並且首先開裂。
Though in about a month she had made the acquaintance of most of the families round, yet, she fraternized with none of them, to use her own words.
雖說在一個月左右的時間里,她已經
結識了四
鄰大多數人家,但是,用她自己的話來說,沒有一個可以同她友善地往來。
Secondly, this paper illustrated the nonlinear phase dynamic theory of the aia array and the application of it to power - combining and beam - scaning technique. according to these theories, the coupling parameter of nearest neighbors was found by experiment, then the two - element and three - element aia array were designed, and the result of measurement was in agree with that of the nonlinear phase dynamic theory, and the beam - scaning of two - element array was realized by tuning the free oscillation frequency of the elements
其次,本文討論了有源集成天線陣列的非線性相位動態理論以及它在功率合成和波束掃描方面的應用,包括同步工作條件、穩定條件和相位動態方程等,通過實驗確定了陣列中相
鄰單元間耦合參數,並將之運用於有源集成天線二元陣和三元陣的設計,實驗
結果與理論
結果吻合較好。
Study for three - dimensional structure of earth interior and geodynamics in china and adjacent land and sea regions
中國及
鄰近陸域海域地球內部三維
結構及動力學研究
Parallel studies on liujiang and bailiandong hominid sites came out in support of the results given here
鄰近的柳江人地點、白蓮洞的測年結果也是如此。