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Microfacies and palaeoenvironments of lateCisuralian and Guadalupian(Early to MiddlePermian)alatoconchid-bearing limestone inLoei fold belt,Indochina Terrane

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Journal of Palaeogeography 2024年第3期13卷 453-474页

作者： mongkol udchachon Hathaithip Thassanapak Clive Burrett Seksan Chaidrusamee MichałKrobicki Pradit Nulay Center of Excellence in Basin Studies and Applied Palaeontology Palaeontological Research and EducationCenterMahasarakham UniversityMaha Sarakham 44150Thailand Department of Biology Faculty of ScienceMahasarakham UniversityMaha Sarakham 44150Thailand Department of General Geology and Geotourism Faculty of GeologyGeophysics and EnvironmentalProtectionAGH University of KrakowMickiewicza 3030-059 KrakowPoland Department of Mineral Resources Ministry of Natural Resources and EnvironmentRatchathewiBangkok10400Thailand

This study presents the first record of Early Permian alatoconchid bivalves from Thailand,theErawan section,in the north of Loei fold belt with prolific fusulines in association with gastropods,and *** taxa are dominated by Pseudofusulina *** Darvasites sp.,Staffella ***,Staffella sp.,Nankinella sp.,Neofusulinella sp.,Schubertella sp.,Pamirina darvasica,Pseudoendothyra *** others,indicating an Artinskian *** wackestone with common,well-preserved smaller foraminifers,Pseudovermiporella *** ostracods indicates a restricted lagoon environment with low to moderate water *** fossils,along with well-preserved,articulated alatoconchids in life-position,suggest the autochthonous nature of the deposits in an intertidal *** the central part of the fold belt,the Pak Chong section exhibits intervals of alatoconchid biostromes *** build-ups of the alatoconchid biostromes with gregarious bivalves,in life-positionembedded in a micritic wackestone matrix,suggest their preferred life habit and *** bivalvecoquinites containing packed bivalve shells and fragments,however,indicate a high-energy *** rockfabric along with common fusuline storm sheets suggests occasional storm events in a restricted,with moderate water circulation to open lagoon *** are predominated by staffellids and othersincluding Staffella sphaerica,Staffella sp.,Sphaerulina croatica,Pisolina subsphaerica,Nankinella sp.,Neoschwagerina simplex,Presumatrina sp.,Afghanella *** others,indicating a Wordian(Middle Permian)*** the southern portion of the fold belt along the Thai-Cambodian border,the Khao Taa Ngog sectioncontains limestone with alatoconchid shells with massive rugose corals which formed local carbonate build-upsin high-energy open platform ***-sorted bioclasts with common fusuline tests,shell fragments and coated grains suggest an open marine,lagoon,back reef

关键词： Indochina terrane Carbonate build-ups Microfacies Permian Depositional environment

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Middle Triassic Radiolarians from Cherts/Siliceous Shales in an Extensional Basin in the Sukhothai Fold Belt,Northern Thailand

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Journal of Earth Science 2017年第1期28卷 9-28页

作者： Hathaithip Thassanapak mongkol udchachon Qinglai Feng Clive Burrett Applied Paleontology and Biostratigraphy Research Unit Department of Biology Faculty of Science Mahasarakham University Mahasarakham 44150 Thailand State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Wuhan 430074 China Paleontological Research and Education Center Mahasarakham University Mahasarakham 44150 Thailand School of Physical Sciences University of Tasmania Hobart Tasmania 7001 Australia

More than thirty species of radiolarians are described from maroon chert and siliceous shales from the Den Chai and Santisuk sections in the east of the Sukhothai fold belt. The fauna obtained from Den Chai comprises Muelleritortis cochleata cochleata, M. cochleata tumidospina, M. expansa, Triassocampe deweveri, T. coronata, T. scalaris, Annulotriassocampe companilis, A. multisegmantatus, A. sulovensis, Pseudostylosphaera coccostyla coccostyla, P. imperspicua, Canoptum inornatus, C. levis, Corum kraineri, Spongoserrula rarauana, Orbiculiforma karnica and others. The assemblage may be correlated with those reported in the Fang-Chiang Dao and Lumphun areas in the north of Thailand and in the ChangningMenglian belt of western Yunnan, South China and suggests a late Ladinian（Middle Triassic） age. The radiolarian fauna from the Santisuk Section comprises Muelleritortis cochleata cochleata, M. sp., Striatotrissocampe nodosoannulata, Triassocampe. deweveri, T. sp., Pseudogodia？ sp., Pseudostylosphaera coccostyla coccostyla, Archaeocenosphera sp., Annulotriassocampe multisegmantis, Pseudostylosphaera sp., and others which indicates a late Ladinian age. Middle Triassic radiolarian chert and siliceous shale from Den Chai and Santisuk are interpreted as having been deposited in an extensional continental margin within the Sukhothai fold belt and not in the Devonian–Permian back-arc basin of the Nan suture. These deep marine sequences were deposited in a subsiding continental margin in the Lampang-Phrae Basin. We consider these sequences to be part of the Hong Hoi Formation（Anisian–Ladinian） of the Lampang Group which, in turn, may be compared to the Choushui Formation and other associated Middle Triassic formations in the Simao Basin of South China.

关键词： Triassic radiolarians Sukhothai fold belt Nan suture Thailand.

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Geochemistry of Radiolarian Cherts from a Late Devonian Continental Margin Basin,Loei Fold Belt,Indo-China Terrane

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Journal of Earth Science 2017年第1期28卷 29-50页

作者： Hathaithip Thassanapak mongkol udchachon Clive Burrett Qinglai Feng Applied Paleontology and Biostratigraphy Research Unit Department of BiologyFaculty of ScienceMahasarakham University Paleontological Research and Education Center Mahasarakham University School of Physical Sciences University of Tasmania State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences

More than 42 species of well-preserved Upper Devonian radiolarians have been obtained from cherts and siliceous shales in four sections(Chom Noi, Phu Kham Phe(P), Phu Kham Phe(C) and Pha Samyod) from the NE Thailand sector of the Loei fold belt, Indochina terrane. They include Ceratoikiscum sp. cf. planistellare Foreman, Helenifore laticlavium Nazarov & Ormiston, Astroentactinia sp. cf. paronae(Hinde), Stigmosphaerostylus herculea(Foreman), S. pusilla(Hinde), S. cf. vulgaris(Won), Trilonche davidi(Hinde), T. echinata(Hinde), T. elegans Hinde, T. hindea(Hinde), T. palimbola(Foreman), T. vetusta Hinde, Polyentactinia polygonia Foreman, Spongentactinella sp. cf. windjanensis Nazarov, Archocyrtium sp.?, Palaeoscenidium sp., Triaenosphaera sp., and others. Radiolarian faunas from these sections indicate a range from lower Frasnian to Famennian. Analyses of rare earth, trace and major elements suggest that the Upper Devonian chert and siliceous successions from Loei were deposited in a continental margin environment near to a volcanic arc. These successions contain distinctive weak negative Ce anomalies with strong positive Eu anomalies which differ from Upper Devonian cherts reported from northern Thailand, the Truong Son fold belt(Laos) and from South China. Negative Ce anomalies and low to moderate Lan/Cen ratios imply proximity between the Chom Noi and Phu Kham Phe(C), which were deposited in more distal parts of the depositional basin than the Pha Samyod and Phu Kham Phe(P) samples. Most of the Pha Samyod and Phu Kham Phe(P) samples exhibit high continental-derived trace element levels including Cr, Zr, Hf, Rb, Th and in part V, which supports close proximity to terrigenous sources. Paleozoic stratigraphic sequences of the Loei fold belt and geochemical results suggest that the Upper Devonian deep marine sequences in the Loei fold belt were deposited within a rifted, continental-margin basin, possibly a back-arc basin and not in a large oceanic basin as has been prev

关键词： radiolarians paleogeography paleoenvironments REE trace elements tectonics

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Geochemistry of Middle Triassic Radiolarian Cherts from Northern Thailand:Implication for Depositional Environment

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Journal of Earth Science 2011年第6期22卷 688-703页

作者： Hathaithip Thassanapak mongkol udchachon Chongpan Chonglakmani 冯庆来 Department of Biology Faculty of ScienceMahasarakham University Palaeontological Research and Education Centre Mahasarakham University School of Geotechnology Institute of EngineeringSuranaree University of Technology State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences

Geochemical analysis reveals that Middle Triassic radiolarian cherts from northern Thailand,including Chiang Dao,Lamphun and Den Chai,are of biogenic *** cherts present slightly high SiO2 content which was possibly modified by diagenetic alteration and migration processes as indicated by negative correlation between SiO2 and most of the other major *** relatively high content of Cr,Zr,Hf,Rb and Th and high positive correlation of these elements with Al and Ti from the majority of cherts suggest a close relation to terrigenous *** Ce anomaly（Ce/Ce＊） with geometric means ranging from 0.85 to 0.93 is compatible with that of continental margin composi-tion（0.67-1.52） from Murray et al.（1990） which is also consistent with low Eu anomalies（Eu/Eu＊,0.91-0.94）.Moreover,the slightly low ratios of La and Ce NASC normalized（Lan/Cen,0.91-0.94） and the low LREE and HREE ratios in most of our samples（Lan/Ybn,0.62-0.85） are in agreement with the continental *** result from Lan/Cen ***2O3/（Al2O3＋Fe2O3） discrimination diagrams also supports the continental margin（residual basin,***.） *** geochemical results are compatible with geological evidence,which suggest that during the Middle Triassic,radio-larian cherts were deposited within a deeper part of a residual basin in which an accommoda-tion space was possibly controlled by faults un-der extensional regime subsequent to Late Variscan（Permian） ***-cally,the main Paleotethys which closed during Late Triassic should be located further to the west of these study *** scenario is in agreement with the current view of the Tethys in this part of the world.

关键词： Triassic geochemistry radiolarian chert depositional environment northern Thailand.

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泰国北部中三叠世放射虫硅质岩及其地球化学和沉积环境意义(英文)

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地球学报 2012年第S1期33卷 67-68页

作者： Hathaithip THASSANAPAK mongkol udchachon Chongpan CHONGLAKMANI Palaeontological Research and Education Centre Mahasarakham UniversityMahasarakham 44150Thailand Department of Biology Faculty of ScienceMahasarakham UniversityMahasarakham 44150Thailand School of Geotechnology Institute of EngineeringSuranaree University of TechnologyNakhon Ratchasima 30000Thailand

Bedded cherts collected from northern Thailand, including Chiang Dao,Lamphun and Den Chai contain Middle Triassic radiolarian *** faunas from Chiang Dao can be divided into two *** first assemblage includes Eptingium ... 详细信息

关键词： Middle Triassic Radiolarian chert Northern Thailand Geochemistry Depositional environment

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印支地体泥盆纪牙形石、放射虫和竹节石组合(英文)

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地球学报 2012年第S1期33卷 65-66页

作者： Hathaithip THASSANAPAK mongkol udchachon Clive BURRETT Palaeontological Research and Education Centre Mahasarakham UniversityMahasarakham44150Thailand Department of Biology Faculty of ScienceMahasarakham UniversityMahasarakham44150Thailand School of Earth Sciences University of TasmaniaBox 252-79HobartTasmania7001Australia

Devonian faunas including conodonts,radiolarians,tentaculitids and other important fossils have recently been found at several localities in the Indochina *** faunas are biostratigraphically and tectonically important... 详细信息

关键词： Devonian Conodont Radiolarian Tentaculitid Indochina

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Antimicrobial,herbicidal and antifeedant activities of mansonone E from the heartwoods of Mansonia gagei Drumm

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Journal of Integrative Agriculture 2016年第12期15卷 2795-2802页

作者： Rachsawan mongkol Warinthorn Chavasiri Program in Biotechnology Faculty of ScienceChulalongkorn University Natural Products Research Unit Department of ChemistryFaculty of ScienceChulalongkorn University

In vitro biological activities including anti-phytopathogenic fungi, antibacterial, antifeedant and herbicidal activities of the extracts from the heartwoods of Mansonia gagei Drumm. were evaluated. The dichloromethane （DCM） extract displayed antifungal activity against four plant pathogenic fungi （Altemaria porri, Colletotrichum gloeosporioides, Fusarium oxysporum and Phytophthora parasitica） higher than the methanolic （MeOH） extract. The separation of the DCM extract using bioassay guided antifungal activity against P. parasiUca led to the isolation of mansorins A, B, and C, mansonones C, E, G and H. Among isolated compounds, mansonone E displayed the highest antifungal activity against P. parasitica, followed by mansonone C, mansorin B and mansonone G. This potent compound revealed the same minimum inhibitory concentrations （MIC） of 31 μg mL-1 against C. gloeosporioides and P. parasitica, and minimum fungicidal concentration （MFC） of 31 and 125 μg mL-1, respectively. Moreover, mansonone E exhibited highly significant antibacterial activity against both Xanthomonas oryzae pv. oryzae （Xoo） and X. oryzae pv. oryzicola （Xoc） with MIC and minimum bactericidal concentration （MBC） as 7.8 and 〉500μg mL-1, respectively. This compound furthermore could inhibit the feed of Spodoptera litura with 45.9% antifeedant and significantly herbicidal activity reduced the shoot and root growth of Brassica chinensis, Oryza sativa, Mimosa pigra and Echinochlooa crus-galli. Mansonone E has potential as a new natural pesticide for agricultural plant pathogen management.

关键词： Mansonia gagei Drumm. mansonone E plant pathogens antifungal antibacterial antifeedant herbicidal activities

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Supplemental effect of varying L-cysteine concentrations on the quality of cryopreserved boar semen

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Asian Journal of Andrology 2010年第5期12卷 760-765页

作者： Kampon Kaeoket Panida Chanapiwat Padet Tummaruk mongkol Techakumphu Semen Laboratory Faculty of Veterinary Science Mahidol University Phuttamonthon Nakorn-pathom 73170 Thailand Department of Obstetrics Gynaecology and Reproduction Faculty of Veterinary Science Bangkok 10330 Thailand

Cryopreservation is associated with the production of reactive oxygen species, which leads to lipid peroxidation of the sperm membrane and consequently a reduction in sperm motility and decreased fertility potential. The aim of this study was to determine the optimal concentration of L-cysteine needed for cryopreservation of boar semen. Twelve boars provided semen of proven motility and morphology for this study. The semen was divided into four portions in which the lactose-egg yolk （LEY） extender used to resuspend the centrifuged sperm pellet was supplemented with various concentrations of L-cysteine to reach 0 mmol L^-1 （group Ⅰ, control）, 5 mmol L^-1 （group Ⅱ）, 10 mmol L^-1 （group Ⅲ） and 15 mmol L^-1 （group Ⅳ）. Semen suspensions were loaded in straws （0.5 mL） and placed in a controlled-rate freezer. After cryopreservation, frozen semen samples were thawed and investigated for progressive motility, viability using SYBR-14/EthD-1 staining and acrosome integrity using FITC-PNA/EthD-1 staining. There was a significantly higher （P 〈 0.01） percentage of progressive motility, viability and acrosomal integrity in two L-cysteine-supplemented groups （group Ⅱ and group Ⅲ） compared with the control. There was a biphasic effect of L-cysteine, with the highest percentage of progressive motility, viability and acrosomal integrity in group Ⅲ. In conclusion, 5 or 10 mmol L^-1 was the optimum concentration of L-cysteine to be added to the LEY extender for improving the quality of frozen-thawed boar semen.

关键词： antioxidant boar semen cryopreservation L-cysteine

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New and rare lignicolous hyphomycetes from Zhejiang Province, China

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第10期9卷 797-801页

作者： mongkol WONGSAWAS Hong-kai WANG Kevin D. HYDE Fu-cheng LIN State Key Laboratory for Rice Biology Institute of Biotechnology Zhejiang University Hangzhou 310029 China Fungal Research Group School of Science Mac Fah Luang University Tasud Muang Chiang Rai 57100 Thailand

Sporidesmiopsis zhejiangensis sp. nov. and Spadicoides americana were found on submerged wood from streams in Zhejiang Province, China. Sporidesmiopsis zhejiangensis is characterized by obclavate to fusiform, 5-6-distoseptate, versicolor-ous, verruculose conidia with an apical mucilaginous sheath. Spadicoides americana is a new record to China. These taxa are described and illustrated, and morphological differences between these species and their similar species were summarized.

关键词：淡水类真菌浙江分布特点肉穗花序

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DESIGN MANUFACTURE TESTING AND EVALUATION OF THE HYDRAULIC COCONUT MILKING MACHINE

DESIGN MANUFACTURE TESTING AND EVALUATION OF THE HYDRAULIC C...

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'97北京国际食品加工及包装技术讨论会

作者： mongkol Kwangwaropas Agricultural Engineering Department Faculty of EngineeringKasetsart Univeisity

＜正＞A high performance hydraulic coconut milking machine was designed and developed in order to produce higher percentage of coconut milk. The machine consists of three main parts, i.e., the frame, the pressure chamber, the hydraulic components including a 11/2 horsepower electric motor. The capacity of the machine was so high and able to produce 9. 5 tons of maximum compressive force in the milking compression chamber. Grated coconut was loaded in a nylon bag and put into the compression chamber in order to extract coconut milk. Different methods and techniques were tried in order to find the optimum performance of the machine. Test results show that the best technique was to load the grated coconut 900 grams at a time in a nylon bag. Then compressed it for about 30 seconds, lifted up the pressing plate and shaked the bag well before compressed it for another 20 seconds. Using this technique, 68% by weight of coconut milk was produced. It was about 15% higher than the conventional machine. It was also shown that loading 1350 grams of grated coconut and using the same compression process resulted in dropping 2.3% by weight of coconut milk. Analysis of test results showed that the power consumption was 1.20 kilowatts.

关键词： Coconut Milking Machine

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