On the sequence of events in H2S oxidation reactions

1997 ◽  
Vol 101 (4) ◽  
pp. 733-740 ◽  
Author(s):  
J. Melsheimer ◽  
R. Schlögl
Keyword(s):  
Oxidation Reactions ◽  
Sequence Of Events ◽  
H2s Oxidation

ChemInform Abstract: Sequence of Events in H2S Oxidation Reactions.

ChemInform ◽  
2010 ◽  
Vol 28 (26) ◽  
pp. no-no
Author(s):  
J. MELSHEIMER ◽  
R. SCHLOEGL
Keyword(s):  
Oxidation Reactions ◽  
Sequence Of Events ◽  
H2s Oxidation

Fine Structural Changes in the Adenohypophyses of Rats Following Destruction of the Pituitary Stalk

1977 ◽  
Vol 35 ◽  
pp. 496-497
Author(s):  
K. Kovacs ◽  
E. Horvath ◽  
J. M. Bilbao ◽  
F. A. Laszlo ◽  
I. Domokos
Keyword(s):  
Structural Changes ◽  
Tissue Injury ◽  
Anterior Lobe ◽  
Uranyl Acetate ◽  
Male Rats ◽  
Pituitary Stalk ◽  
Sequence Of Events ◽  
Pituitary Glands ◽  
Electrolytic Lesions ◽  
Ultrathin Sections

Electrolytic lesions of the pituitary stalk in rats interrupt adenohypophysial blood flow and result in massive infarction of the anterior lobe. In order to obtain a deeper insight into the morphogenesis of tissue injury and to reveal the sequence of events, a fine structural investigation was undertaken on adenohypophyses of rats at various intervals following destruction of the pituitary stalk.The pituitary stalk was destroyed electrolytically, with a Horsley-Clarke apparatus on 27 male rats of the R-Amsterdam strain, weighing 180-200 g. Thirty minutes, 1,2,4,6 and 24 hours after surgery the animals were perfused with a glutaraldehyde-formalin solution. The skulls were then opened and the pituitary glands removed. The anterior lobes were fixed in glutaraldehyde-formalin solution, postfixed in osmium tetroxide and embedded in Durcupan. Ultrathin sections were stained with uranyl acetate and lead citrate and investigated with a Philips 300 electron microscope.

Desmosomal distribution in the epidermis of a non-contracting human skin equivalent

1992 ◽  
Vol 50 (1) ◽  
pp. 896-897
Author(s):  
L.X. Oakford ◽  
S.D. Dimitrijevich ◽  
R. Gracy
Keyword(s):  
Human Skin ◽  
Basal Layer ◽  
Skin Equivalent ◽  
Tissue Component ◽  
Intact Skin ◽  
Similar Sequence ◽  
Sequence Of Events ◽  
Suprabasal Keratinocytes ◽  
Human Skin Equivalent

In intact skin the epidermal layer is a dynamic tissue component which is maintained by a basal layer of mitotically active cells. The protective upper epidermis, the stratum corneum, is generated by differentiation of the suprabasal keratinocytes which eventually desquamate as anuclear comeocytes. A similar sequence of events is observed in vitro in the non-contracting human skin equivalent (HSE) which was developed in this lab (1). As a part of the definition process for this model of living skin we are examining its ultrastructural features. Since desmosomes are important in maintaining cell-cell interactions in stratified epithelia their distribution in HSE was examined.

Albumin-Induced Endocytic Vacuoles in Tetrahymena Pyrijormis

1975 ◽  
Vol 33 ◽  
pp. 694-695
Author(s):  
L. J. Brenner ◽  
D. G. Osborne ◽  
B. L. Schumaker
Keyword(s):  
Electron Microscopy ◽  
Bovine Serum Albumin ◽  
Bovine Serum ◽  
Protein Concentration ◽  
Tetrahymena Pyriformis ◽  
Sequence Of Events ◽  
Cytoplasmic Bodies ◽  
Food Vacuoles ◽  
Mouse Ascites ◽  
Normal Human

Exposure of the ciliate, Tetrahymena pyriformis, strain WH6, to normal human or rabbit sera or mouse ascites fluids induces the formation of large cytoplasmic bodies. By electron microscopy these (LB) are observed to be membrane-bounded structures, generally spherical and varying in size (Fig. 1), which do not resemble the food vacuoles of cells grown in proteinaceous broth. The possibility exists that the large bodies represent endocytic vacuoles containing material concentrated from the highly nutritive proteins and lipoproteins of the sera or ascites fluids. Tetrahymena mixed with bovine serum albumin or ovalbumin solutions having about the same protein concentration (7g/100 ml) as serum form endocytic vacuoles which bear little resemblance to the serum-induced LB. The albumin-induced structures (Fig. 2) are irregular in shape, rarely spherical, and have contents which vary in density and consistency. In this paper an attempt is made to formulate the sequence of events which might occur in the formation of the albumin-induced vacuoles.

Amyloid β-peptide and Alzheimer's disease

2014 ◽  
Vol 56 ◽  
pp. 99-110 ◽  
Author(s):  
David Allsop ◽  
Jennifer Mayes
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Senile Plaques ◽  
Strong Support ◽  
Amyloid Β ◽  
Amyloid Β Peptide ◽  
Amyloid Cascade Hypothesis ◽  
Sequence Of Events ◽  
Aβ Amyloid ◽  
Amyloid Cascade

One of the hallmarks of AD (Alzheimer's disease) is the formation of senile plaques in the brain, which contain fibrils composed of Aβ (amyloid β-peptide). According to the ‘amyloid cascade’ hypothesis, the aggregation of Aβ initiates a sequence of events leading to the formation of neurofibrillary tangles, neurodegeneration, and on to the main symptom of dementia. However, emphasis has now shifted away from fibrillar forms of Aβ and towards smaller and more soluble ‘oligomers’ as the main culprit in AD. The present chapter commences with a brief introduction to the disease and its current treatment, and then focuses on the formation of Aβ from the APP (amyloid precursor protein), the genetics of early-onset AD, which has provided strong support for the amyloid cascade hypothesis, and then on the development of new drugs aimed at reducing the load of cerebral Aβ, which is still the main hope for providing a more effective treatment for AD in the future.

Strategi Peningkatan Kompetensi Berbicara Bahasa Inggris Siswa Smk Negeri 1 Pacitan Tahun Pelajaran 2012/2013

2017 ◽  
Vol 1 (1) ◽  
pp. 43-51
Author(s):  
Asroji Asroji
Keyword(s):  
English Language ◽  
Language Instruction ◽  
Final Report ◽  
Computer Engineering ◽  
Project Report ◽  
Engineering Software ◽  
Final Project ◽  
Network Computer ◽  
Sequence Of Events ◽  
English Speaking

This study was conducted based on the facts about the lack of maximal outcomes of learning English in almost all levels of education, especially in vocational school. Although English has been studied for many years, but the majority of students can not master English well, especially speaking. Many factors cause this phenomenon, and all parties should concern to work together to formulatebetter system and process of English learning at vocational school.The research was conducted at SMK Negeri 1 Pacitan, by taking the students of class XII as subjects research. The sample of this research consists of 94 students of Business Travel and Tourism,Network Computer Engineering, and Engineering Software classes. This research uses descriptive qualitative method. It is used to describe the students’ speaking competence, particularlyin presenting final task report. This research also identifies the internal and external functions to formulate a strategy to improve the students’s speaking competence. The results showed that based on the analysis of English speaking competency of SMK Negeri 1 Pacitan students, it can be concluded as follows: a). Based on the students absorption analysis of presenting final project report, shows that English competency level of students is in the category of “pretty”, with evidence of the studentsvalue average in presenting final project report is more than the passing grade value (7.50),it is 79.5. While the number of student, who passed the presentation test,is 66 students.So it can be obtained the percentage level of mastery learning students on the presentation test of final report is only 70.21%, and it is categorized “less”, because the percentage of students who passed this exam is still under 75%. b). While the analysis of the questionnaire can be scribed that the average overall score of 3.44 speaking competence components are categorized “pretty”, and it can be concluded that the level of competence of English speaking students generally categorized “enough”. Based on the level ofstudents’ English speaking competence , it can be formulated the strategies to increase its competence. They are: a). Maximizing the use of English as a language instruction and reducing the use of Indonesian, especially in the learning process, to improve English language competency, so that students can have the ability to explain the sequence of events and the students can pass the exam well. b). Having more English presentation activitiesin other topics to encourage the students’ bravery and self-confidence in speaking English, so that students have good Englishcompetence as preparation to getjobs or to continue their study at university.c). Having more exercise of using body language to improve the mastery of speech, and smooth attitude, so that students have good English competence,and they are able to compete in the global world in obtaining employment. d). And maximizing the use of school’s facilities by using various methods of learning, and focusing on the students’ center method to improve the studentsEnglish competency so that they are able to compete for educational scholarships in this country and abroad.

The Legacy of Iraq

2015 ◽  
Keyword(s):  
Middle East ◽  
Liberal Democracy ◽  
Iraq War ◽  
Free Market ◽  
Political Elite ◽  
Islamic State ◽  
Sequence Of Events ◽  
The World ◽  
Free Market Capitalism ◽  
Market Capitalism

This book critically reflects on the failure of the 2003 intervention to turn Iraq into a liberal democracy, underpinned by free-market capitalism, its citizens free to live in peace and prosperity. The book argues that mistakes made by the coalition and the Iraqi political elite set a sequence of events in motion that have had devastating consequences for Iraq, the Middle East and for the rest of the world. Today, as the nation faces perhaps its greatest challenge in the wake of the devastating advance of the Islamic State of Iraq and Syria (ISIS) and another US-led coalition undertakes renewed military action in Iraq, understanding the complex and difficult legacies of the 2003 war could not be more urgent. Ignoring the legacies of the Iraq War and denying their connection to contemporary events could mean that vital lessons are ignored and the same mistakes made again.

Mechanism of Oxidation Reactions of Bromine

1958 ◽  
Vol 14 (5_6) ◽  
pp. 357-360
Author(s):  
K. C. Grover ◽  
R. C. Mehrotra
Keyword(s):  
Oxidation Reactions ◽  
Mechanism Of Oxidation
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