The rising temperature in the cave, the lamp - light ' s toasting and the convictive air made the humidity of the whole or part of the cave descend, which made the speleothem sightseeing dry, cracked and weathering. the acid air from the outer and the highly dense co2 would cause acid erode action to the speleothem sightseeing with water vapor. the existence of lamp - light offered a good chance for the lightloving plant to grow up, thus a lot of bryophyte covered the speleothem sightseeing
洞穴升溫、燈光的烘烤及空氣的對流致使洞穴濕度或局部濕度降低,使景觀產生乾
裂、風化;氣流帶入的洞外
酸性氣體及高濃度co _ 2在高濕的條件下,結合水汽對洞穴景觀產生
酸侵蝕作用;燈光的存在為燈光植物生長提供了條件,使大量的苔蘚類植物生長于鐘乳類景觀的表面;洞外大氣粉塵的進入,給洞穴帶來了非常嚴重的破壞,粉塵在洞內高濕的環境下大量沉降,附著于鐘乳類景觀的表面,致使受污染面發黑,毫無光澤。
The results showed that the cucumber seeds soaked with extracts of total alkaloid, dissoluble alkaloid and fat - soluble alkaloid from p. multisectum ( maxim. ) bobr., the activities of amylase, protease and lipase during seed germination were inhibited, the seed vigor and germination rate were suppressed, and respiration rate of seedling was slackened ; root activity, chlorophyll content and activities of nitrate reductase, superoxide dismutase sod ) and peroxidase ( pod ) of cucumber seedlings during seedlings growth were increased
結果表明,多
裂駱駝蓬總生物堿提取液、水溶性生物堿提取液和脂溶性生物堿提取液浸種均抑制黃瓜種子萌發過程中澱粉酶、蛋白酶和脂肪酶活性,種子活力和萌發速率降低,呼吸速率減慢;幼苗生長過程中根系活力、硝
酸還原酶活性升高,葉綠素含量增加,超氧化物歧化酶( sod )和過氧化物酶( pod )活性提高。
By infrared spectrum study, the limonite ( feooh nh2o ) can be considered the main colorating mineral in the yellow and red jadeite, and the hematite is another colorating mineral in the red jadeite. the difference of color tone is due to the n value in the molecular formula feooh nh2o and the content of crystal water and adsorbent water. the iron ion came from the effloresced and eroded rocks, and formed fe ( oh ) 3 colloid reacted with the surface water
周圍礦床的風化蝕變為表生水提供了鐵質,形成弱
酸性的含fe ( oh ) _ 3膠體的水溶液,表生水流經翡翠礦石時, fe ( oh ) _ 3膠體附著在巖石的表面,經過脫水結晶和吸附,形成褐鐵礦膠體,褐鐵礦膠體沿
裂隙或鬆散的礦物顆粒進入翡翠巖石中,逐漸累積沉澱,形成次生色層。
2. the sequence of si gene from ibv - lx4 strain was consisted of 1614 bp from initiation codon atg to the possible cleavage site of spike glycoprotein, encoding for a 18 - amino signal - peptide with the n terminus of si protein and a polypeptide of 537 - amino acids. 19 highly conserved, potential glycosylation sites and 17 cysteines residues were characterized with si protein, homology analysis showe that there were gene deletion -
S1基因:其全序列共1614bp (從起始密碼子atg到s前體蛋白
裂解位點) ,編碼537個氨基
酸,其氨基端有一編碼18個氨基
酸的信號肽序列,第12 13位氨基
酸殘基構成了信號肽的切割位點, 14 19位與111 124位氨基
酸殘基為s1蛋白的跨膜區域。
Protein kinase a is camp - dependent kinase, one of the most important signal transduction pathways, plays a pivotal role in growth, differentiation, tumor occur, cell cycle control, etc. pka activators such as camp, 8 - br - camp or phosphodiesterase ( pde ) inhibitor isomethyl butyl xanthine ( imbx ) or purified pka catalytic subunit all can inhibit germinal vesicle breakdown ( gvbd ) and meiotic maturation in mouse oocytes, also in xenopus oocytes
蛋白激酶a ( proteinkinasea , pka )是依賴于camp的絲蘇氨
酸蛋白激酶,是重要的信號傳導途徑之一,廣泛參與許多生命過程,包括生長、分化、腫瘤發生、細胞凋亡、細胞周期調控等。以小鼠卵母細胞為實驗對象,給予pka激動劑camp 、 8 - br - camp或磷
酸二酯酶抑制劑imbx ( isomethylbutylxanthine )均可抑制小鼠卵母細胞的胚泡破
裂及減數分
裂成熟。
Healon used as eye wash in lacrimal passages flushing
透明質
酸鈉在下淚小管斷
裂吻合術中的應用
The methods - three dimension fabric - enforced laminates, and sparse fabric - enforced laminates, layer - enforced laminates ? to enhance the interlaminar toughness of fabric - reinforced laminates were discussed in this paper. the stitching method to enhance interlaminar toughness of stitched - laminates was mainly discussed in this paper based on our research and experiment. the middle - alkali glass fabric used as enforced - material with thickness of 0. 2mm, 3 section 600 deniner kevlar yarn is used as stitching thread in this research, which improved lock stitching way and different kinds of stitching mode were adopted
以提高層合板復合材料的層間斷
裂韌性(能量釋放率)為目標,採用中堿玻璃布為增強材料,對疊層后的玻璃布,採用凱芙拉縫合線、改進的鎖型縫合方法、不同的縫合工藝進行了縫合;基體採用的是不飽和樹脂,固化劑為過氧化甲乙酮,促進劑為環烷
酸鈷液;在室溫下採用真空輔助rtm ( resigntransfermolding )成型固化方法,製作了不同縫合工藝的玻璃布增強復合材料層合板。
After reproduction of the viral nucleic acid the host cell usually undergoes lysis ( lysogeny )
病毒核
酸復制后寄主細胞通常要經歷
裂解過程(溶源狀態) 。
A novel ring - enlargement oxidation of polyphenyl substituted cyclopentadienes in air ( or molecular oxygen ) promoted by perchloric acid was described, in which an oxygen atom was inserted into the cyclopentadiene - ring, forming a six - membered pyrylium salts
摘要報導了空氣(或氧氣)存在的條件下,由高氯
酸引發多苯基取代環戊二烯發生新穎的碳碳鍵斷
裂擴環反應,在此反應中,氧原子插人到環戊二烯環中形成相應的六元環吡喃鹽類化合物。
The path - way controlling of neptunium in co - decontamination step of purex process, the extraction thermodynamics of amido podand and its usage in recovery of actinides from simulated hllw have been investigated. more than 95 % np were maintained in np ( v ) in 1a extractor and flowed into 1 aw, if enough amount of hno2 was added in feed adjustment and then hno2 scavenger ( urea ) was added before extraction. three kinds of amido podand were synthesized, and the extraction of lanthanides, actinides and some fission products were studied. one of them ( tbopda, n, n, n ', n " - tetrabutyl - 3 - oxa - pantenadiamide ) was used as extractant to recover actinides from hllw. the results of experiments show that more than 99. 99 % actinides were recovered from hllw and separated basically in groups. the main digests are as follows : 1
鎿走向控制研究中通過調價階段加入亞硝
酸、而萃取前清除亞硝
酸的獨特辦法可以將大於95的鎿趕入1aw 。合成了三種酰胺莢醚萃取劑,研究了它們對錒系和
裂片元素的萃取熱力學,通過條件實驗選擇了其中一種莢醚tbopda ( n , n , n 』 , n 』 ?四丁基? 3 ?氧戊二酰胺) ,進行了從模擬高放廢液中分離錒鑭系元素的工藝研究,錒系的回收率大於99 . 99 ,並且基本上實現了錒鑭元素的組分離。其要點如下: 1
Clinical observation on nitroglycerin ointment for the treatment of 60 cases of earlier anal fissure
硝
酸甘油油膏治療早期肛
裂60例臨床觀察
The total protein content and cell activity test results showed high proliferation ability and cell activity of the chondrocyte in modified pdl - la scaffold
軟骨細胞的蛋白質含量和細胞活性測試結果表明,軟骨細胞在原位自修飾的聚乳
酸三維支架內有較強的分
裂增殖能力和較高的細胞活性。
Optimum fermentation condition for producing alginase
海藻
酸裂解酶的發酵條件優化
Purification and properties of polygalacturonic acid lyase from ramie degumming bacillus subtilis no. 16a
苎麻脫膠聚半乳糖醛酸裂解酶的純化及酶學性質