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Browsing Sci - Research Reports by Issue Date

Browsing Sci - Research Reports by Issue Date

Now showing items 1-20 of 560

Studies on morphology, anatomy and ecology of a new species of deep-sea hagfish from the Andaman Sea

Thosaporn Wongratana (Chulalongkorn University, 1983)

Eptatretus indrambaryai n.sp. is described from ten specimens from two different localities in the Andaman Sea, at depths of about 267-400m where the temperature was about 11.0-12.2 Degree Celsius. The fish appears to be ...
A study of the influence of Na[superscript +] on the conformation of glycine zwitterion in aqueous solution

Sirirat Kokpol; Supot Hannongbua; Prayong Doungdee (Chulalongkorn University, 1987)

The interaction of glycine zwitterion and water is calculated using ab initio method with minimized GLO basis set. The first hydration shell of glycine zwitterion is predicted to compose of five water molecules. The influence ...
A report on copper skarn deposit at Phu Lon, Amphoe Sang Khom Changwat Nong Khai

Visut Pisutha-Arnond; Sirichai Sunmanee; Sudham Yaemniyom (Chulalongkorn University, 1988)

Based on the geological and petrographical studies and chemical analysis of drill-core and outcrop samples, the geology and mineralization at the Phu Lon area are revealed. The Phu Lon prospect is a Cu-Fe-Au-Ag skarn deposit ...
Synthesis of Cassava starch-based water-absorbing polymer for agricultural application

Suda Kiatkamjornwong; Faullimmel, Jean G. (Chulalongkorn University, 1989)
The Site survey and the study on reproductive cycles of freshwater pearl mussels in the central part of Thailand

Somsak Panha (Chulalongkorn University, 1989)

Eight species of freshwater pearl mussels were collected from general canals and irrigation canals in Nakornsawan Province, Chainat Province, Lopburi Province, Saraburi Province, Sing buri Province, Ayutthaya Province and ...
Investigation on the host specificity of the glochidium of freshwater pearl mussel, Hyriopsis (Limnoscapha) myersiana (Lea, 1856)

Somsak Panha (Chulalongkorn University, 1991)

The reproduction cycle and the host specificity of the freshwater pearl mussel, Hyriopsis (Limnoscapha) myersiana were studies from April 1990 to May 1991. Marsupia were found already in early November but, the peak occurred ...
Analysis of volatile organic priority pollutants in water by headspace technique

Wutichai Yentongchai; Sarunya Hengpraprom; Varaporn Leepipatpiboon (Chulalongkorn University, 1994)

In this study, a headspace technique was developed for the determination of some volatile chlorinated hydrocarbons i.e, methylene chloride, chloroform, carbon tetrachloride, 1,1,1-trichloroethane and trichloroethylene in ...
Petrochemistry of probable gem-bearing basalts in Sop Prap-Ko Kha Area, Changwat Lampang : research report

Punya Charusiri; Wasant Pongsapich; Chakkaphan Sutthirat (Chulalongkorn University, 1996)

The project area covers approximately 300 km[superscript 2] encompassing parts of Amphoe Sop Prap, Amphoe Ko Kha, and Amphoe Mae Tha of Changwat Lampang. The area is mainly occupied by sedimentary (and metamorphic) rocks ...
A study of protonation and deprotonation of the novel amino acids : the compounds of aspartic acids : research repor

Vithaya Ruangpornvisuti (Chulalongkorn University, 1997)

Acidity and basicity constants of N-acetylaspartic acid, aspartic acid, aspartylaspartic acid, Asp-Asp-Asp, Asp-Asp-Asp-Asp, Asp-Asp-Asp-Asp-Asp and Asp-Asp-asp-Asp-Asp-Asp were determined in 0.1 M potassium nitrate at 25 ...
Synthesis and amyl acetate by lipases from various microorgamisms

Warawut Chulalaksananukul (Chulalongkorn University, 1997)

The main objective of this study is to synthesize biofragrance "amyl acetate" naturally extractable from the flowers of the Thai plant called "Nom Maew" (Rauwenhoffia siamenesis Scheff.) by a biotechnological method. Lipases ...
Development of products from Mae Moh flue-gas gypsum

Supatra Jinawath (Chulalongkorn University, 1999)

The flue-gas desulfurization gypsum (FGD gypsum) from Mae Moh power station is characterized for its physical and chemical properties, precleaned by acid leaching and sedimentation to light coloured powder which is later ...
The application of DNA demethylation in alteration of phenotypic, seed production, protein lipid content and fatty acid composition in soybean cultivar SJ. 5

Wichai Cherdshewasart; Winai Dahlan; Siriporn Chumruslertluk (Chulalongkorn University, 1999)

To evaluate the demethylating effects of 5-azaC on the general phenotypes, protein content, oil content and fatty acid composition at the whole plant system, soybean plants (Glycine max (L.) Merrill) var. SJ.5 have been ...
Basicity investigation and structure optimization of polyaza-Calixarenes and stabilities of their complexes with metal cations

Vithaya Ruangpornvisuti (Chulalongkorn University, 2000)

The structure of 25, 26, 27, 28-tetra(2-ethoxyaniline)calix[4]arene of cone (cL) and partial cone (pcL) conformations were optimized by PM3 of quantum chemical method. It has been found that cL structure is more stable ...
Relationships between biological activity and molecular properties of artemisinin compounds

Sirirat Kokpol (Chulalongkorn University, 2001)

Relationships between biological activity and molecular properties of 68 antimalarial artemisinin compounds were investigated in the quantitative manner. All compounds were geometrically optimized at the HF/3-21G level. ...
Acidity and basicity investigation for novel derivative of salen and stabilities of their complexes with metal cations : research report

Vithaya Ruangpornvisuti (Chulalongkorn University, 2002)

Salen derivative, 4 was synthesized and studied for determination of its protonation constants by potentiometric titration. The protonation constants at 25 degree Celsius in 0.1 and 0.5 M KNO[subscript 3] are log K[subscript ...
Effect of lead on human erythroid precursor cells

Suganya Soontaros; Wenika Benjapong; Ahnond Bunyaratvej; Kovit Pattanapanyasat (Chulalongkorn University, 2002)

The mechanism of lead toxicity in human erythroid precursor cells (EPCs) is the main aim of this research. Abnormal development of EPCs, the imma red blood cells, may involve with lead induced anemia. Human EPCs, the model ...
การศึกษาการแพร่กระจายของประชากรผึ้งโพรง Apis cerana กลุ่มตอนเหนือและตอนใต้ในบริเวณพื้นที่รอยต่อโดยใช้ดีเอ็นเอเครื่องหมาย : รายงานผลการวิจัย

Siriporn Sittipraneed (Chulalongkorn University, 2002)

PCR-RFLP of three mtDNA regions ( srRNA gene ,irRNA gene and intergenic COI – COII region) were used to investigated the distribution of northern and southern Apis cerana populations of 89 colonies from Prachuap Khiri ...
Fabrication of porous calcium phosphates

Supatra Jinawath (Chulalongkorn University, 2002)

The starting materials for this experiment were monocalcium phosphate monohydrate, dicalcium phosphate dihydrate and anhydrous dicalcium phosphate synthesized in-house from the by-product of a local bone-gelatin manufacture. ...
Sintering of Si[subscript 3]N[subscript 4] ceramics in an air atmosphere furnace

Piyaporn Chaiyapuck; Supatra Jinawath; Wada, Shigetaka (Chulalongkorn University, 2003)

Pressed specimens of α-Si3N4 (SN-E10) powder with Y2O3 and Al2O3 additives were successfully sintered without a serious mass loss at a temperature range of 1550-1700°C in an air atmosphere furnace using a set of specially ...
Investigation of conformational equilibrium and proton affinity of Thiacalix[4] arenas and their complexes with cations : research report

Vithaya Ruangpornvisuti (Chulalongkorn University, 2004)

The p-tert-butylsulfonylcalix[4]arene and sulfonycalix[4]arene conformers have been obtained by AM1 geometry optimizations. The structural cavities of p-tert-butylsulfonylcalix[4]arene and sulfonylcalix[4]arene conformers ...

Now showing items 1-20 of 560

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