Mn(OAc)3-promoted hydroxylation of α-carbomethoxy-γ-lactones by molecular oxygen

2000 ◽  
Vol 78 (1) ◽  
pp. 128-132 ◽  
Author(s):  
Laurent Lamarque ◽  
Alain Méou ◽  
Pierre Brun
Keyword(s):  
Key Words ◽  
Molecular Oxygen ◽  
Manganese Acetate ◽  
Key Words Manganese

The Mn(OAc)3-mediated hydroxylation of a series of α-carbomethoxy-γ-lactones by molecular oxygen is described. The reaction is regio- and stereoselective and gives α-carbomethoxy-α-hydroxy-γ-lactones. Key words: manganese acetate, γ-lactones, hydroxylation, molecular oxygen.

Secondary ion mass spectroscopy (SIMS) and kinetics of the catalysis of bisulphite oxidation by aqueous iron

1996 ◽  
Vol 74 (11) ◽  
pp. 2217-2220 ◽  
Author(s):  
R.R. Martin ◽  
Jinjiang Li
Keyword(s):  
Catalytic Activity ◽  
Key Words ◽  
Molecular Oxygen ◽  
Mass Spectroscopy ◽  
Oxidation Mechanism ◽  
Cloud Water ◽  
Secondary Ion Mass Spectroscopy ◽  
Aqueous Oxidation ◽  
Kinetics Of ◽  
Secondary Ion

The catalytic activity of Fe(II) and Fe(III) in the aqueous oxidation of bisulphite by molecular oxygen at bisulphite concentrations similar to those in cloud water has been studied. Secondary Ion Mass Spectroscopy (SIMS) of insoluble sulphates derived from bisulphite after oxidation by 18O2 gives different 18O/32S ratios for Fe(II) and Fe(III), indicating that the oxidation mechanism is different in these two species. Key words: oxidation, bisulphite, iron, secondary ion mass spectroscopy.

scholarly journals Фосфоресценция кислорода при возбуждении на длине волны 765 nm

2021 ◽  
Vol 129 (4) ◽  
pp. 467
Author(s):  
В.М. Киселев ◽  
И.В. Багров ◽  
А.С. Гренишин
Keyword(s):  
Carbon Tetrachloride ◽  
Liquid Phase ◽  
Singlet Oxygen ◽  
Key Words ◽  
Molecular Oxygen ◽  
Optical Excitation ◽  
Molecular Complexes ◽  
Absorption Lines ◽  
Led Array ◽  
Oxygen Complexes

Abstract — The phosphorescence of oxygen in the liquid phase and in a solution in carbon tetrachloride was studied upon excitation at a wavelength of 765 nm using an LED array as a source of direct optical excitation. A comparison is made of the observed efficiency of oxygen phosphorescence at a wavelength of 1270 nm upon its excitation at a wavelength of 765 nm with its excitation at other wavelengths, which partially or completely coincide with the absorption lines of molecular oxygen complexes. Key words: phosphorescence, singlet oxygen, molecular complexes, optical excitation, LED matrices.

Multislice imaging of gastrointestinal stromal tumors

2018 ◽  
pp. 3-14
Keyword(s):  
Computed Tomography ◽  
Key Words ◽  
Gold Standard ◽  
Gastrointestinal Stromal Tumors ◽  
Mesenchymal Tumors ◽  
Stromal Tumors ◽  
Preferential Localization ◽  
Multislice Imaging ◽  
Computed Tomography Diagnosis

Gastrointestinal stromal tumors (GIST) are the most common mesenchymal tumors of the digestive tract (1%). These tumors express the CD 117 in 95% of cases. The stomach is the preferential localization (70%). Diagnosis is difficult and sometimes late. Progress of imaging has greatly improved the management and the prognosis. Computed tomography (CT) is the gold standard for diagnosis, staging, and treatment follow-up. The increasing recognition of GIST’s histopathology and the prolonged survival revealed some suggestive imaging aspects. Key words: gastro-intestinal stromal tumors; computed tomography; diagnosis

METHODS OF CONSULTING ON STUDYING THE DEGREE OF MOISTURE SUPPLY OF SLOPE LANDS FOR AGRICULTURAL PRODUCTION IN AZERBAIJAN

2018 ◽  
Author(s):  
Prof.RAE Aliev Z.H.
Keyword(s):  
Key Words ◽  
Agricultural Production ◽  
Soil Ecology ◽  
Arable Soil ◽  
Clean Technology ◽  
Agricultural Product ◽  
Current Information ◽  
Moisture Supply ◽  
Managerial System

The current information on moisture and the temperature of the ground in managerial system by production to agricultural product necessary, in the first place, for taking the operative decisions at development ecological clean technology irrigation under growing agricultural cultures to achieve the maximum harvest. Key words: aerospace methods, COW, moisture, moisture test, arable, soil, ecology, vafer humidity, drill, graduation, tool, etc.

PELAKSANAAN HUKUM KEWARISAN ISLAM DI PENGADILAN AGAMA BANTEN

ALQALAM ◽  
2013 ◽  
Vol 30 (1) ◽  
pp. 158
Author(s):  
Yusuf Somawinata
Keyword(s):  
Key Words ◽  
Islamic Law ◽  
Survey Methods ◽  
Adopted Children ◽  
Inheritance Law ◽  
Library Research ◽  
The Ideal

This article aims at describing the obseroance of wasiat wajibah (compulsory bequeathment) in the Islamic court of Banten, analyzing the provision of the substitute heir and adopted children in the Compilation of  Islamic Law (KHI). In addition, the ideal laws to manage the innheritance rules in Indonesia. This article is library research by using doctrinal approach and using case study and survey methods. The data was, then, analyzed by using analytical descriptive and analytical correlative methods. The result showed that the observance of wasiat wajibah in the Islamic court of  Banten employed by judges is by using the Mawali Hazairin’s Doctrine. The criteria of the adoption of substitute heir and adopted children in the KHI is the attempts of Ulama and many judgees junst in giving legal justice and certainty to the society.   Key Words: Islamic Inheritance Law, Compilation of Islamic Law, Islamic court of  Banten

Phosphorus fertilization in inbred and hybrid rice

1970 ◽  
Vol 19 (2) ◽  
pp. 181-187
Author(s):  
MR Islam ◽  
PK Saha ◽  
SK Zaman ◽  
MJ Uddin
Keyword(s):  
Grain Yield ◽  
Key Words ◽  
Hybrid Rice ◽  
Phosphorus Fertilization ◽  
Phosphorus Fertilizer ◽  
Yield Difference ◽  
P Balance ◽  
Rice Genotypes ◽  
Boro Rice

Five phosphorus rates (0, 5, 10, 20 and 30 kg P/ha) were tested with four rice genotypes in Boro (BRRI dhan36, BRRI dhan45, EH1 and EH2) and T. Aman (BRRI dhan30, BRRI dhan49, EH1 and EH2) season. Phosphorus rates did not influence grain yield irrespective of varieties in T. Aman season while in Boro season P response was observed among the P rates. Application of P @ 10 kg/ha significantly increased the grain yield. But when P was applied @ 20 and 30 kg P/ha, the grain yield difference was not significant. The optimum and economic rate of P for T. Aman was 20 kg P/ha but in Boro rice the optimum and economic doses of P were 22 and 30 kg/ha, respectively. Hybrid entries (EH1 and EH2) used P more efficiently than inbred varieties. A negative P balance was observed up to 10 kg P/ha. Key words: Response; Phosphorus fertilizer; Inbred; Hybrid rice DOI: http://dx.doi.org/10.3329/dujbs.v19i2.8962 DUJBS 2010; 19(2): 181-187

Laparoscopic adrenal cystectomy - report of two cases

1970 ◽  
Vol 19 (1) ◽  
pp. 50-53
Author(s):  
GM Zakir Hossain ◽  
Mofizur Rahman ◽  
Mohammad Rashedul Hasan
Keyword(s):  
Key Words ◽  
College Teachers ◽  
Medical College

Key words: laparoscopic; adrenal cystectomydoi: 10.3329/jcmcta.v19i1.3854Journal of Chittagong Medical College Teachers' Association 2008: 19(1):50-53

HUBUNGAN DISIPLIN MAHASISWA DAN FASILITAS KAMPUS DENGAN PRESTASI MAHASISWA

2018 ◽  
Vol 15 (1) ◽  
pp. 99
Author(s):  
Didi C. Chalil
Keyword(s):  
Student Achievement ◽  
Student Learning ◽  
Key Words ◽  
Learning Process ◽  
Difficulty Level ◽  
Motivation To Learn ◽  
Classroom Learning ◽  
Final Exam ◽  
Lecture Material ◽  
A Value

One indicator of the success ofeducation in the level of classroom learning is when a lecturer is able to build student learning achievement and will be more successful if this achievement can be increased if their attendance is above 80% (minimum 10 times attendance from 12 meetings). If the students can be grown discipline and provided a decent campus facilities, then as difficult as any lecture material or learning process that followed by they undoubtedly will live with feelings of joy, even they will feel sad if that day lecturer could not come because there is a need outside campus.There are four stages of appraisal that apply to each student for each course taken include (1) attendance of 10% (2) Task 20% (3) 30% Semester Exam (UTS) and (4) Final Exam Semester. (UAS) 40%. The writer as a lecturer tries to cultivate motivation to learn from the beginning, in addition to always communicate actively with students who follow the lecture also monitor attendance and assignment, each completed college is always given the practice / tasks are directly given the value, usually given the task quite easily so they can get a value of 100, even if there is a miscalculation, they are still given the opportunity to fix the error so that eventually get a value of 100. With the value of this 100, their motivation to grow and even grow in such a way that spur them to diligent lectures.The difficulty level of the task is balanced with the lecture, the longer it is raised so as to reach the maximum average level of student ability at the end of the lecture meeting...This research reveals that there is no a significant correlation between student achievement to discipline presence of student/mahasiswa with campus facilities. The analyzing was taken from an answer of 55 students who were randomly selected as respondents by filling out the Questionaire that was distributed to them. Key words : achievement, attendance, discipline, campus facility

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