309 results
Search Results
Now showing 1 - 10 of 309
Publication Open Access Clinicon: A Service Robot Designed to Position and Transport Patient: First Conceptual Design and Applications Report(2012) Sorayouth Chumnanvej; Preedipat Sattayasoonthorn; Dilok Puanhvuan; Nuttawut Rohitasathira; Jackrit Suthakorn; สรยุทธ ชำนาญเวช; ปรีดิพัทธ์ สัตยสุนทร; ดิลก ปืนฮวน; ณัฐวุฒิ โรหิตเสถียร; จักรกฤษณ์ ศุทธากรณ์; Mahidol University. Faculty of Medicine Ramathibodi Hospital. Department of Surgery; Mahidol University. Faculty of Engineering. Department of Biomedical Engineeringwith the feasibility and conceptual design to assist the medical teams to transport and also to position the patients particularly in the operating room with safety concern. The first main conceptual system of Clinicon consists of the line follow tracking system... and the designed manipulator for transporting and positioning the patient to perform the task only in the operating room. However, this is still the conceptual design, the practical version robot; Clinicon, is quite challenge to be built in the future.Publication Metadata only Effect of pH on Iontophoretic Transport of Pramipexole Dihydrochloride across Human Epidermal Membrane(2021-04-01) Kamchai Saepang; S. Kevin Li; Doungdaw Chantasart; University of Cincinnati; Mahidol UniversityPurpose: Drugs with higher molecular charges generally show higher flux enhancement when electromigration is the main mechanism in transdermal iontophoresis. This study evaluated the effect of decreasing the formulation pH to increase the positive... charges of pramipexole dihydrochloride (PXCl) on its iontophoretic transport across skin. Methods: In vitro transdermal iontophoresis of PXCl in buffer solution isotonized with either sodium chloride or mannitol were performed in a pH range of 3.0–7Publication Metadata only Spin switching effects in a ferromagnetic graphene junction having a second gate(2010-03-01) Watchara Liewrian; Rassmidara Hoonsawat; I. Ming Tang; Mahidol University; ThEPThe effects of the bias voltage placed on a second gate which is positioned to the left of the ferromagnetic graphene (FG) layer on the switching of the charge and spin transports in a ferromagnetic graphene junction are studied. We show... that the change in the bias voltage from positive to negative (while maintaining the positive voltage on the first gate above the FG layer) can induce a switching from high to low conductance states in the junction. The voltage on the first gate is used to shiftPublication Metadata only Spin switching effects in a ferromagnetic graphene junction having a second gate(2010) Watchara Liewrian; Rassmidara Hoonsawat; I-Ming Tang; Mahidol University. Mahidol University International College.The effects of the bias voltage placed on a second gate which is positioned to the left of the ferromagnetic graphene (FG) layer on the switching of the charge and spin transports in a ferromagnetic graphene junction are studied. We show... that the change in the bias voltage from positive to negative (while maintaining the positive voltage on the first gate above the FG layer) can induce a switching from high to low conductance states in the junction. The voltage on the first gate is used to shiftPublication Metadata only Decreased retinol transport proteins in Thai post-menopausal women with osteoporosis(2011-12-01) Chaowanee Chupeerach; Talabporn Harnroongroj; Benjaluck Phonrat; Anchalee Tungtrongchitr; Florian J. Schweigert; Rungsunn Tungtrongchitr; Sangchai Preutthipan; Mahidol University; Universitat PotsdamHigh vitamin A ingestion or high serum retinol have been postulated to increase the risk of fractures and osteoporosis by reduced bone mineral density (BMD). Retinol is carried and transported to the tissues bound to retinol binding protein 4 (RBP4...) and transthyretin (TTR). The relationships between retinol, retinol transport protein, retinol binding protein 4 (RBP4) and transthyretin (TTR) and BMD and osteoporosis are unclear. To examine the association between retinol and RBP4 and TTR and osteoporosis, 73Publication Metadata only Na+/H+exchanger 3 inhibitor diminishes hepcidin-enhanced duodenal calcium transport in hemizygous β-globin knockout thalassemic mice(2017-03-01) Narattaphol Charoenphandhu; Kamonshanok Kraidith; Kornkamon Lertsuwan; Chanakarn Sripong; Panan Suntornsaratoon; Saovaros Svasti; Nateetip Krishnamra; Kannikar Wongdee; Mahidol University; Burapha UniversityH regulation and transepithelial sodium absorption was hypothesized to negatively affect hepcidin action. Herein, the positive effect of hepcidin on the duodenal calcium transport was evaluated using Ussing chamber technique. The results showed that BKO mice... the upregulation of Fe2+and H+cotransporter, divalent metal transporter (DMT)-1, has been shown to correlate with thalassemia-induced intestinal calcium absorption impairment, the inhibition of the apical Na+/H+exchanger (NHE)-3 that is essential for cytoplasmic pPublication Metadata only In vitro and in vivo evaluation of amphiphilic chitosan derivatives for inhibition of organic cation transport function(2020-01-01) Sirima Soodvilai; Sunhapas Soodvila; Warayuth Sajomsang; Theerasak Rojanarata; Prasopchai Patrojanasophon; Praneet Opanasopit; Rangsit University; Silpakorn University; Thailand National Nanotechnology Center; Mahidol University), with renal organic cation transporter 2 (OCT2). The influence of amphiphilic chitosan derivatives on renal OCT2 transport function was determined by monitoring the transport of a positively charged substrate into human renal proximal tubular epithelial cells... (RPTEC/TERT1 cells), and murine kidney. Amphiphilic chitosan derivatives inhibited 3H-MPP (a substrate of OCT2) transport in the renal cells in a concentration-reliance characteristic. OSCS reduced the accumulation of the cationic drug, cisplatinPublication Metadata only Substrate specificity of sugar transport by rabbit SGLT1: Single-molecule atomic force microscopy versus transport studies(2007-03-13) Theeraporn Puntheeranurak; Barbara Wimmer; Francisco Castaneda; Hermann J. Gruber; Peter Hinterdorfer; Rolf K.H. Kinne; Mahidol University; Max Planck Institut fur molekulare Physiologie; Johannes Kepler Universitat Linzin the study of the stereospecificity of the overall transport. rbSGLT1-transfected Chinese hamster ovary (CHO) cells were used for both approaches. Evidence of binding of D-glucose to the extracellular surface of rbSGLT1 could be obtained using AFM tips... carrying 1-thio-D-glucose coupled at the C1 position to a PEG linker via a vinylsulfon group. Competition experiments with monosaccharides in solution revealed the following selectivity ranking of binding: 2-deoxy-D-glucose ≥ 6-deoxy-D-glucose > D-glucosePublication Metadata only Hepcidin induces intestinal calcium uptake while suppressing iron uptake in Caco-2 cells(2021-10-01) Supathra Phoaubon; Kornkamon Lertsuwan; Jarinthorn Teerapornpuntakit; Narattaphol Charoenphandhu; Naresuan University; Mahidol University; Institute of Molecular Biosciences, Mahidol University; Academy of ScienceAbnormal calcium absorption and iron overload from iron hyperabsorption can contribute to osteoporosis as found in several diseases, including hemochromatosis and thalassemia. Previous studies in thalassemic mice showed the positive effects... of the iron uptake suppressor, hepcidin, on calcium transport. However, whether this effect could be replicated in other conditions is not known. Therefore, this study aimed to investigate the effects of hepcidin on iron and calcium uptake ability underPublication Metadata only Prolactin directly stimulated the solvent drag-induced calcium transport in the duodenum of female rats(2004-10-11) Chaiyot Tanrattana; Narattaphol Charoenphandhu; Liangchai Limlomwongse; Nateetip Krishnamra; Mahidol UniversityProlactin has been reported to stimulate the calcium absorption of the duodenum where three components of the active calcium transport, namely transcellular active, voltage-dependent and solvent drag-induced calcium transport, were identified.... It was known that the transcellular active, but not the voltage-dependent, duodenal calcium transport was directly stimulated by prolactin. The present study thus aimed to evaluate the direct action of prolactin on the solvent drag-induced duodenal calcium