期刊文献+
共找到90篇文章
< 1 2 5 >
每页显示 20 50 100
非小细胞肺癌中Naked1的表达及意义 被引量:8
1
作者 赵月 孙波 +1 位作者 张盛 王恩华 《临床与实验病理学杂志》 CAS CSCD 北大核心 2012年第3期257-260,共4页
目的探讨Naked1(NKD1)蛋白在非小细胞肺癌(non-small cell lung cancer,NSCLC)组织中的表达与预后的关系。方法采用RT-PCR、Western blot法对35例新鲜肺癌组织进行检测;采用免疫组化SP法对100例NSCLC石蜡标本进行检测。结果在79%的新鲜... 目的探讨Naked1(NKD1)蛋白在非小细胞肺癌(non-small cell lung cancer,NSCLC)组织中的表达与预后的关系。方法采用RT-PCR、Western blot法对35例新鲜肺癌组织进行检测;采用免疫组化SP法对100例NSCLC石蜡标本进行检测。结果在79%的新鲜肺癌标本中,NKD1的蛋白水平明显低于相对应的癌旁正常肺组织,而mRNA水平明显高于正常肺组织(P<0.01)。在78%的NSCLC免疫组化标本中,NKD1的表达明显低于正常肺组织(P<0.01)。在肺鳞癌中NKD1的表达低于腺癌,并与分化程度呈正相关(P<0.01),与淋巴结转移(P<0.05)和TNM分期(P<0.01)呈负相关,NKD1低表达者的术后生存时间明显低于正常表达者(P=0.01)。结论在NSCLC中,NKD1 mRNA上调,而蛋白水平下调,其蛋白的下调程度与临床病理因素和不良预后相关。 展开更多
关键词 肺肿瘤 naked1 预后
下载PDF
Pirh2和Naked2在乳腺癌组织中的表达及其临床意义
2
作者 盛陈毅 倪启超 《南通大学学报(医学版)》 2014年第6期500-502,共3页
目的:分析乳腺癌组织中Pirh2和Naked2的表达情况及其临床意义。方法:随机选取在2011年1月—2013年12月期间收治的96例乳腺癌标本作为观察组,同时选取癌旁组织作为对照组,应用免疫组织化学方法对Pirh2和Naked2表达情况进行检测,分析Pirh2... 目的:分析乳腺癌组织中Pirh2和Naked2的表达情况及其临床意义。方法:随机选取在2011年1月—2013年12月期间收治的96例乳腺癌标本作为观察组,同时选取癌旁组织作为对照组,应用免疫组织化学方法对Pirh2和Naked2表达情况进行检测,分析Pirh2和Naked2表达与乳腺癌病理分级的关系及Pirh2和Naked2两者的相关性。结果:Pirh2在乳腺癌组织中高表达,癌旁组织中低表达,Naked2在乳腺癌组织中低表达,癌旁组织中高表达(P<0.05);年龄、肿瘤大小与癌中Pirh2和Naked2的表达无关(P>0.05);肿瘤病理分级和淋巴结转移与Pirh2和Naked2的表达相关(P<0.05);Pirh2和Naked2的表达呈负相关。结论:Pirh2和Naked2对乳腺癌的生物学行为的判断及预后有一定的提示作用。 展开更多
关键词 乳腺癌 PIRH2 naked2
下载PDF
Analysis of the application and practice of PDCA cycle in management of the naked medicine dispensing——the quality and safety of the drug 被引量:5
3
作者 Yun-Xiang Qiu Chun-Yan Zhao +1 位作者 Jia-Mei Zhu Lin-Jun Li 《Frontiers of Nursing》 CAS 2019年第3期227-231,共5页
Objective:To explore the application of plan–do–check–action(PDCA)cycle in the management of the naked medicine dispensing about the automatic package and to analyze the practice improved in the quality of naked me... Objective:To explore the application of plan–do–check–action(PDCA)cycle in the management of the naked medicine dispensing about the automatic package and to analyze the practice improved in the quality of naked medicine dispensing medicine management.Methods:The PDCA theory was used to analyze the data,to find out the causes of the problem,and to formulate the corresponding countermeasures to intervene.The data of the naked medicine/adverse drug events satisfaction degree of the inpatients in 18 inpatient departments given for the adoption of PDCA cycle in January 2017 were set as the observation group.The number of the naked medicine/adverse drug events satisfaction degree of patients in 18 inpatient departments before adoption of PDCA cycle in December 2016 was set as the control group.The number of the naked medicine/adverse drug events satisfaction degree of patients in 18 inpatient departments before and after adoption of PDCA cycle was observed and analyzed.Results:The number of the naked medicine/adverse drug events after implementing the method of PDCA cycle management rate was significantly lower than before the implementation method of PDCA cycle management,and the difference had statistical significance(P<0.05).The satisfaction degree of the inpatients after implementing the method of PDCA cycle management rate was significantly higher than that before the implementation method of PDCA cycle management,and the difference had statistical significance(P<0.05).Conclusion:Application of PDCA cycle in the management of the naked medicine dispensing about the automatic package can help to reduce the adverse drug events,to improve the safety of drug treatment,and to increase the patients’satisfaction degree. 展开更多
关键词 PDCA CYCLE the naked MEDICINE DISPENSING automatic MEDICINE PACKING machine quality and safety DRUG ADMINISTRATION
下载PDF
胃腺癌组织Naked1和MMP-9表达及其相关性研究 被引量:3
4
作者 余泽兵 舒亦斌 雷慧慧 《浙江中西医结合杂志》 2013年第1期9-11,共3页
目的:观察胃腺癌组织Naked1和MMP-9蛋白表达特征,探讨两者的关系及临床价值。方法:选择97例胃腺癌术后留取的蜡块作为胃癌组,选择62例正常胃黏膜组织作为正常对照组,应用免疫组织化学技术检测两组中Naked1和MMP-9蛋白表达,观察Naked1和M... 目的:观察胃腺癌组织Naked1和MMP-9蛋白表达特征,探讨两者的关系及临床价值。方法:选择97例胃腺癌术后留取的蜡块作为胃癌组,选择62例正常胃黏膜组织作为正常对照组,应用免疫组织化学技术检测两组中Naked1和MMP-9蛋白表达,观察Naked1和MMP-9表达与临床病理特征的相关性。结果:胃癌组Naked1蛋白表达阳性率明显低于正常对照组(P<0.01),MMP-9蛋白表达阳性率明显高于正常对照组(P<0.01)。胃癌组Naked1和MMP-9蛋白表达与肿瘤的临床分期、淋巴结转移、浸润深度、Ki67表达密切相关(P<0.05或P<0.01);Naked1和MMP-9表达具有负相关性(P<0.05),生存分析显示Naked1低表达、MMP-9高表达患者预后差。结论:胃腺癌组织Naked1和MMP-9呈异常表达,两者对病变的进展具有重要作用,术后检测Naked1和MMP-9表达可能对判断预后有一定价值。 展开更多
关键词 胃腺癌 naked1 MMP-9 免疫组化
下载PDF
The effects of steaming and roasting treatments on lipase activity and nutritional components of “oat rice” (OR): the peeled naked oat (Avena nuda) kernels 被引量:1
5
作者 Xinzhong Hu Jinting Yan Xiaohui Xing 《Agricultural Sciences》 2011年第2期56-60,共5页
Peeled naked oat kernels, named “oat rice” (OR) by Chinese food scientists and processors, are novel oat products in China. This study exam-ined the effects of steaming and roasting treat-ments on the enzyme activit... Peeled naked oat kernels, named “oat rice” (OR) by Chinese food scientists and processors, are novel oat products in China. This study exam-ined the effects of steaming and roasting treat-ments on the enzyme activities, nutritional con-tents, and flour pasting properties of OR kernels. Results showed that a peeling time of 20 s caused 16.13% β-glucan loss, while a peeling time 25 s caused 34.29% β-glucan loss in the kernels. OR kernels with a 20 s peeling treatment demonstrated significantly higher starch levels and kernel whiteness compared with normal oat kernels (P<0.01). It was also found that normal pressure steaming, autoclaved steaming and infrared roasting treatments could exterminate lipase activities in the OR kernels, and provide the OR kernels with significantly lower final viscosities and setback values than normal kernels (P<0.01). 展开更多
关键词 naked OAT (Avena Nuda) OAT RICE PEELING Treatment Lipase Activity Infrared ROASTING
下载PDF
Effects of Peeling with Flexible Alloy Blade on Naked Oats 被引量:1
6
作者 ZHANG Zheng WANG Xiaoxi MA Sen 《Grain & Oil Science and Technology》 2018年第3期131-137,共7页
This research reported the effect of peeling naked oats with a peeling machine equipped with the flexible alloy blade.Results showed that the flexible alloy blade could achieve the same effect as traditional abrasive ... This research reported the effect of peeling naked oats with a peeling machine equipped with the flexible alloy blade.Results showed that the flexible alloy blade could achieve the same effect as traditional abrasive rolls. Furthermore, the new peeling method had hardly damage to the oat kernels. The result of scanning electron microscopy indicated the surface of peeled naked oats by the flexible alloy blade is homogeneous. The gap between the flexible alloy blade and the slotted screen could change the particle sizes of the flours obtained, which differed from traditional peeling machines. In addition, peeling for 15 seconds significantly reduced the microbial contaminants. The removal of outer layer decreased the lipase activity. The technological parameters were optimized by orthogonal L_9(3~4) test, the results showed a 30 s peeling time and 2% second-addition of water contributed to the peeling rate. The texture analysis demonstrate that the hardness of cooked groats decreases obviously after peeling treatments. 展开更多
关键词 naked oats PEELING Flexible alloy blade Microbial contaminants Lipase activity
下载PDF
Assessment of Stress on Serum Estradiol and Cortisol Levels in Female Subordinate Naked Mole Rats Following Isolation from Natal Colony
7
作者 Amos Onyansi Makori Albert Wafula Nyongesa +1 位作者 Hesbon Odongo Rael Jepkogei Masai 《Journal of Biosciences and Medicines》 2020年第3期9-17,共9页
This study investigated the effects of isolation of subordinate naked mole rats from natal colonies on their reproductive success. Naked mole rat is one of the known mammals that exhibit eusociality. It has been noted... This study investigated the effects of isolation of subordinate naked mole rats from natal colonies on their reproductive success. Naked mole rat is one of the known mammals that exhibit eusociality. It has been noted that naked mole rats have their reproduction restricted to one queen and less than three males;the rest of the animals within the colony remain sterile. The study aimed at establishing whether the reproductive suppression in subordinate naked mole rats is the outcome of social stress exerted by breeding female in the colony or other unknown environmental factors within the colony set-up. Experimental period was 20 weeks and it involved two stages, acclimatization and isolation. Before acclimation, 2 female subordinate naked mole rats were sacrificed. Blood samples were collected and appropriately preserved for later analysis. On the 2nd, 4th and 6th weeks of acclimatization, 2 female mole rats were sacrificed at each stage and blood samples were harvested for analysis. On week 7, eighteen subordinate females were isolated and randomly assigned into two groups of 9 animals each in two separate cages for 14 weeks. One week 8, 2 subordinate females from each group were randomly selected, sacrificed and blood samples collected for analysis. The same procedure was repeated on week 12 and 20 of study. Hormonal analysis was done using ELISA technique. The Statistical analysis done using student t-test at 95% confidence level and significance level was set at P < 0.05. Results showed increase in cortisol levels only in singly isolated females which were the greatest on week 8 (from 35.5 ng/ml to 123.4 ng/ml). Mean estradiol in singly isolated females was 18 ± 2.52 pg/ml while females paired with males had 19.0 ± 3.0 pg/ml hence no significant difference (paired t = -1.73, P = 0.23). Conclusively, the observed reproductive suppression among subordinate naked mole rats in natal colonies is probably due to presence of queen or other reproductive aspects that may not be directly related to stress. 展开更多
关键词 ISOLATION SUBORDINATE naked MOLE Rat Reproductive Success Stress ESTRADIOL
下载PDF
Improving Transportation and Transplanting Efficiency of Flue-cured Tobacco by Transportation of Naked Seedlings
8
作者 胡勇 吴永琴 +3 位作者 李恒源 常龙飞 刘寅 邹军 《Agricultural Science & Technology》 CAS 2015年第2期251-252,共2页
[Objective] The aim was to resolve the problem of low transportation efficiency of seedlings,vulnerability of seedling trays and difficulty of recycling.[Method]Naked seedlings were transported with trays and frames t... [Objective] The aim was to resolve the problem of low transportation efficiency of seedlings,vulnerability of seedling trays and difficulty of recycling.[Method]Naked seedlings were transported with trays and frames to improve transportation and transplanting efficiency.[Result] The transportation of naked seedlings would effectively reduce transportation cost and improve transportation and transplanting efficiency of tobacco seedlings.[Conclusion] The transportation of naked seedlings is suitable to be applied in the region with professional transplanting. 展开更多
关键词 Flue-cured tobacco Transportation of naked seedlings Transplanting seedlings
下载PDF
Language features in The naked and the dead
9
作者 XU Fu-ling 《Sino-US English Teaching》 2009年第5期57-61,65,共6页
As to the theme of human nature, there are many scholars and critics approaching The naked and the dead from different perspectives. This paper aims to analyze this theme from the writer's skills in manipulating lang... As to the theme of human nature, there are many scholars and critics approaching The naked and the dead from different perspectives. This paper aims to analyze this theme from the writer's skills in manipulating language, presenting his characters' true states of mind. In the novel, Mailer skillfully chooses words and sentences with connotations to expose their human nature. With his choice of words, Mailer further molds his characters, investing them with the richest personalities. By the choice of words, Norman Mailer displays the richest personalities in his characters, disclosing the degeneration of human beings. 展开更多
关键词 The naked and the dead language features personalities DEGENERATION
下载PDF
A Corpus-based Analysis of the Usage of Naked Eye
10
作者 虞晶 《海外英语》 2010年第12X期281-281,共1页
It is widely accepted that eye is a high-frequency word in English,and one of the stronger collocations is naked eye.In order to research the usage of naked eye,a concordance line of naked eye is selected from corpus ... It is widely accepted that eye is a high-frequency word in English,and one of the stronger collocations is naked eye.In order to research the usage of naked eye,a concordance line of naked eye is selected from corpus evidence.The collocation,meaning,attitude words and larger variable expression of naked eye are mainly examined with the purpose of better studying the usage of naked eye. 展开更多
关键词 CORPUS naked eye COLLOCATION MEANING ATTITUDE WORDS larger variable expression
下载PDF
Clinical efficacy of femtosecond laser-assisted phacoemulsification in diabetic cataract patients
11
作者 Yi-Fei Tang Zhi-Hui Duan 《World Journal of Clinical Cases》 SCIE 2024年第10期1733-1741,共9页
BACKGROUND Diabetic patients with cataracts encounter specific difficulties during cataract surgery due to alterations in microcirculation,blood supply,metabolism,and the microenvironment.Traditional phacoemulsificati... BACKGROUND Diabetic patients with cataracts encounter specific difficulties during cataract surgery due to alterations in microcirculation,blood supply,metabolism,and the microenvironment.Traditional phacoemulsification may not fully tackle these issues,especially in instances with substantial preoperative astigmatism.The utilization of femtosecond laser-assisted phacoemulsification,in conjunction with Toric intraocular lens(IOL)implantation,offers a potentially more efficient strategy.This research seeks to evaluate the efficacy and possible complications of this approach in diabetic cataract patients.AIM To investigate the clinical efficacy and complications of femtosecond laser-assisted phacoemulsification combined with Toric IOL implantation in diabetic cataract patients,comparing it with traditional phacoemulsification methods.METHODS This retrospective study enrolled 120 patients with diabetes cataract from May 2019 to May 2021.The patients were divided into two groups:the control group underwent traditional phacoemulsification and Toric IOL implantation,while the treatment group received Len Sx femtosecond laser-assisted treatment.Outcome measures included naked eye vision,astigmatism,high-level ocular phase difference detection,clinical efficacy,and complication.RESULTS There were no significant preoperative differences in astigmatism or naked eyesight between the two groups.However,postoperative improvements were observed in both groups,with the treatment group showing greater enhancements in naked eye vision and astigmatism six months after the procedure.High-level corneal phase difference tests also indicated significant differences in favor of the treatment group.CONCLUSION This study suggests that femtosecond laser-assisted phacoemulsification combined with Toric IOL implantation appears to be more effective in enhancing postoperative vision in diabetic cataract patients compared to traditional methods offering valuable insights for clinical practice. 展开更多
关键词 Diabetic cataract Femtosecond laser-assisted phacoemulsification Toric intraocular lens implantation naked vision
下载PDF
Electrophoretic Analysis of Isozymes and Discussion about Species Differentiation in Three Species of Genus Gymnocypris 被引量:15
12
作者 陈毅峰 何德奎 陈宜瑜 《Zoological Research》 CAS CSCD 北大核心 2001年第1期9-19,共11页
By using the method of electrophoresis,three isozymes (lactate dehydrogenase,malate dehydrogenase and esterase) of three species of genus Gymnocypris were described and analyzed from North Tibet in this paper. The... By using the method of electrophoresis,three isozymes (lactate dehydrogenase,malate dehydrogenase and esterase) of three species of genus Gymnocypris were described and analyzed from North Tibet in this paper. The results showed that all three isozymes presented interspecific difference and distinct differentiation among individuals in the same population,and there was no electrophorectic difference between males and females. Analysis of relationships among three naked carps indicated a high degree of similarity between G. selincuoensis and G. cuoensis ,whereas low degree between G. selincuoensis and G. namensis . Furthermore,three isozymes presented expression of null alleles,and the duplicate genes of LDH A 2,LDH B 2,s MDH A 2 and m MDH B 2 also expressed in some individuals. Compared to other tetraploid fishes,three naked carps retained more functional duplicate genes and null alleles. This suggests fishes of genus Gymnocypris are at the early stage of evolution after polyploidization than that of fishes of Catostomidae,it directly related to the later time of schizothoracine fishes originate as well as severe environment. 展开更多
关键词 naked carps ( Gymnocypris ) North Tibet Isozyme electrophoresis Duplicate gene Null allele Species differentiation
下载PDF
谷物β-葡聚糖对代谢的影响 被引量:6
13
作者 仝海英 高继东 《青海医学院学报》 CAS 2015年第3期209-212,共4页
谷物β-葡聚糖对代谢的影响是近年来学界新关注到的一个问题,产生了一些新的学说或观点,本文就此加以综述。β-葡聚糖是膳食纤维中的一种成分类型,是重要的谷物非淀粉多糖,主要存在于大麦和燕麦中,据报道[1],每100g干重大麦含β-葡聚糖... 谷物β-葡聚糖对代谢的影响是近年来学界新关注到的一个问题,产生了一些新的学说或观点,本文就此加以综述。β-葡聚糖是膳食纤维中的一种成分类型,是重要的谷物非淀粉多糖,主要存在于大麦和燕麦中,据报道[1],每100g干重大麦含β-葡聚糖为2~20 g,燕麦为3~8 g,明显高于高粱(1.1g^6.2g)、玉米(0.8g^1.7g)、麦子(0.5g^1.0g)和大米(0.13g)。 展开更多
关键词 Β-葡聚糖 非淀粉多糖 膳食纤维 胰岛素抵抗 葡萄糖转运 naked 成分类型 一个问题 糖耐量实验 高脂饮食
下载PDF
文化内涵深刻的“seven” 被引量:1
14
作者 谢艳明 《语言教育》 2001年第12期7-8,共2页
美国波音公司用737、747、757、767、777等等来命名其制造的飞机的型号,一些世界驰名的商品品牌也带有“seven”,如:Mild Seven,SevenUp,等等,这是为什么呢?这一问题的答案就在“seven”的文化内涵之中。seven 是一个神圣而又充满神秘... 美国波音公司用737、747、757、767、777等等来命名其制造的飞机的型号,一些世界驰名的商品品牌也带有“seven”,如:Mild Seven,SevenUp,等等,这是为什么呢?这一问题的答案就在“seven”的文化内涵之中。seven 是一个神圣而又充满神秘色彩的数字,它对西方文化乃至整个世界的文化都产生了广泛而深远的影响,具有浓厚的宗教色彩,影响着人们工作、生活的方方面面。人们习惯用“The Sev- 展开更多
关键词 西方文化 商品品牌 世界驰名 美国波音公司 SEVEN 宗教色彩 SEVEN 语言运用 THINGS naked
下载PDF
全都是“空”
15
作者 陈辉 《英语自学》 2006年第3期36-37,共2页
关键词 日常学习 naked HOLLOW BLANK 全秃 造房子 遮盖物 EMPTY 终身监禁 女演员
下载PDF
浅淡今日的美国俚语 被引量:10
16
作者 邓小敏 《山东外语教学》 北大核心 1990年第4期31-34,共4页
俚语在美语中使用颇为广泛,可以说,它无所不在。无论你在何处,都可以听到美国人使用俚语。俚语究竟从何来?它在社会活动中有何作用?今日的美国俚语景况如何?下一代的美国俚语将从何来?笔者想谈谈自己的粗浅看法。
关键词 理语 美语 何来 标准英语 黑人英语 女权运动 阅读过程 naked 新闻广播 同性恋者
下载PDF
112 CASES OF JUVENILE MYOPIA TREATED BY AURICULAR ACUPRESSURE 被引量:1
17
作者 陈茂长 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 1989年第3期173-,234,共2页
The author has treated 112 myopes (221eyes) in the Youyang County Hospital outpatientdepartment since March,1984.All cases wereobserved clinically for more than 6 months withrather satisfactory effects.Here is the rep... The author has treated 112 myopes (221eyes) in the Youyang County Hospital outpatientdepartment since March,1984.All cases wereobserved clinically for more than 6 months withrather satisfactory effects.Here is the report. 展开更多
关键词 satisfactory clinically hundred shortest illness UNSTABLE BASELINE naked FUNDUS SESSION
下载PDF
Gravitational Collapse of Radiating Dyon Solution and Cosmic Censorship Hypothesis 被引量:1
18
作者 K. D. Patil S. S. Zade A. N. Mohod 《Chinese Physics Letters》 SCIE CAS CSCD 2008年第3期854-857,共4页
We investigate the possibility of cosmic censorship violation in the gravitational collapse of radiating dyon solution. It is shown that the final outcome of the collapse depends sensitively on the electric and magnet... We investigate the possibility of cosmic censorship violation in the gravitational collapse of radiating dyon solution. It is shown that the final outcome of the collapse depends sensitively on the electric and magnetic charge parameters. The graphs of the outer apparent horizon, inner Cauchy horizon for different values of parameters are drawn. It is found that the electric and magnetic components push the apparent horizon towards the retarded time-coordinate axis, which in turn reduces the radius of the apparent horizon in Valdya spacetime. Also, we extend the earlier work of Chamorro and Virbhadra [Pramana, J. Phys. 45 (1995) 181]. 展开更多
关键词 naked SINGULARITIES VAIDYA SPACETIMES DUST COLLAPSE FLUID TIME STRENGTHS
下载PDF
Defective callose walls and cell plates during abnormal meiosis cause male-sterility in the oat mutant zbs1 被引量:1
19
作者 SHI Xiao WU Jin-xia +5 位作者 ZHOU Hai-tao YANG Xiao-hong LI Tian-liang ZHANG Xin-jun YANG Cai HAN Xiao 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第2期241-248,共8页
During meiosis in flowering plants,degradation of the callose wall in tetrads releases newly produced microspores,which develop into mature pollen grains.In this study,we identified zbs1,a male-sterile mutant of naked... During meiosis in flowering plants,degradation of the callose wall in tetrads releases newly produced microspores,which develop into mature pollen grains.In this study,we identified zbs1,a male-sterile mutant of naked oat(Avena nuda L.)that displayed complete spikelet sterility due to inviable mature pollen.The abnormal pollen grains originated from microspores with a defective callose wall and cell plate during meiosis.The defective callose wall and cell plate of the zbs1 mutant were detected by the labeling of cell wall epitopes(β-1,3-glucan) with immunogold during meiosis,and an abnormal chromosome configuration was observed by propidium iodide staining.The mature pollen grains of the zbs1 mutant were irregular in shape,and abnormal germination was observed by scanning electron microscopy.Together,our results indicate that the cause of male sterility in zbs1 is abnormal meiosis. 展开更多
关键词 callose male sterility meiosis microspore naked oat
下载PDF
LIGHT DEMANDS OF JUVENILE LAMINARIA JAPONICA
20
作者 费修绠 蒋本禹 +3 位作者 丁美丽 吴雅景 黄如意 李汉昌 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 1989年第1期1-9,97,共10页
The light demands of seaweeds is an interesting and rather complex phenomenon because they depend not only on the species but also on their different development stages. Even different parts of the same plant sometime... The light demands of seaweeds is an interesting and rather complex phenomenon because they depend not only on the species but also on their different development stages. Even different parts of the same plant sometimes have different light demands. Light control is an important procedure at large scale Lamnaria nursery stations in China. Technicians and scientists have different viewpoints on the best method to regulate light. A culture study on Lamnaria japonica starting from zoospores to several centimeter sporophytes to find the optimal and critical irradiance ranges for juvenile Laminaria at different development stages added more knowledge on this aspect. Experiment results show gametophytes can not tolerate irradiance of more than 150uEm-2s-1 while sporophytes can tolerate more than 519 uEm-2s-1. This big difference starts from the very early stage of 1-to 2-celled sporophytes. The biological basis and mechanism of this phenomenon need further research. 展开更多
关键词 LAMINARIA JUVENILE strings SOMETIMES starts cultivation SLIDES young regulate naked
下载PDF
上一页 1 2 5 下一页 到第
使用帮助 返回顶部