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4-(2-Pyridylazo)-resorcinol에 의한 Gallium 및 Indium의 흡광 광도정량
林炳五,孫太源,柳館杓 弘益大學校 1983 弘大論叢 Vol.15 No.2
Several condition for the spectrophotometric determination of gallium and indium with 4-(2-Pyridylazo)-resorcinol [PAR] have been studied. The color solution of gallium-PAR, indium-PAR shows a maximum absorption at 504nm, 510nm, and follow Beer's law over a range of a to 15㎍/25ml, 2 to 30㎍/25ml of gallium and indium The molar extinction coeffecient at 504nm, 510nm are estimated to be 102,000, 86, 400. The absorbancy of the solution is kept constant for 20hrs and is not affected by temperature between 13~35℃. Since iron(Ⅲ), cobalt, copper, bismuth, zinc. cadmium, aluminium interfere more or less, the seperation of gallium and indium from some of the above ions by means of ether extraction has been studied. the constitution of the complex examined by continuous variation method is that the molar ratio of gallium:PAR, indium-PAR are 1:2.
유년기 안구적출술 및 방사선치료로 인하여 발생된 안와 열성장에 대한 재건 치험례
홍관석,김성문,김훈,임재석,최미숙,최성원,권종진 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.1
There are many reports of the surgical management for the craniofacial abnormalities arising from the irradiation of the head and face for treatment of childhood cancers. Since the mordern combined-modality theraphy for childhood cancers began in the late 1960s and the early 1970s, recent reports have described the occular, dental and maxillo-facial abnormalities after irradiation in long-term survivors of cancers of the head and face. The resultant deformities may be known to be difficult to reconstruct with surgical techniques. This paper describes the late reconstructive surgery for the unilateral orbital and malar hypoplasia after eyeball enucleation and irradiation during childhood to correct the facial asymmetry and expand the contracted orbital socket into the functional dimension for the retaining eyeball prosthesis with spherical implant. We reports the satisfactory preliminary results from the midfacial osteotomy through the supero-lateral orbital rim and malar bone and the antero-lateral repositioning with the autogenous bone grafting in 26 year-old female patient who will be planned to make the new eyeball prosthesis by the department of ophthalmology.
( Kwan Soo Woo ),( Jun Hyuck Yoon ),( Su Young Woo ),( Seong Han Lee ),( Sang Urk Han ),( Hye Rim Han ),( Saeng Geul Baek ),( Chang Soo Kim ) 한국산림과학회 2010 Forest Science And Technology Vol.6 No.2
Four-year-old seedlings of Pinus densiflora were inoculated with a suspension of B. xylophilus, or B. mucronatus adjusted to 3,000 nematodes per 50 μL sterilized distilled water in a greenhouse on July 21, 2008 to evaluate initial symptom development and the changes of gas exchange rate. B. xylophilus and B. mucronatus were distinguished by four restriction enzymes except Rsa I, and the result of ITSRFLP of B. xylophilus used in this experiment was completely matched to that of pine wood nematode reported previously. Needle dehydration and subsequent yellowing were observed in all seedlings inoculated with B. xylophilus isolate while the appearance of the seedlings was normal in all seedlings inoculated with B. mucronatus and control. Needle dehydration was observed in most seedlings inoculated with B. xylophilus between 2 and 3 weeks after inoculation. In seedlings inoculated with B. xylophilus, continuous decrease in photosynthetic rate was observed after 6 days of inoculation. Photosynthetic rate decreased more markedly after 12 days of inoculation when external symptoms appeared in most seedlings, and ceased almost completely 19 days after inoculation. Photosynthetic decline in seedlings inoculated with B. mucronatus was only observed at 19 days after inoculation but recovered above control level after 25 days of inoculation. We found that disease development and the changes of gas exchange rate in the seedlings of Pinus densiflora inoculated with B. xylophilus were not observed on those inoculated with B. mucronatus.
임창수,최해룡,정용구,박윤관,정흥섭,이훈갑,이기찬,주정화 대한신경외과학회 1988 Journal of Korean neurosurgical society Vol.17 No.6
Patterns of brain-stem compression and secondary brain-stem evoked postentials were investigated to correlate with expanding mass volume and location in mass-induced supratentorial brain compression in cats in which the subjects were divided into four experimental group i.e., frontal, temporal, parietal, and occipital brain-compressed groups. Postmortem inspection of the brain-stem showed either unilateral or bilateral dorsal herniation of the brain in frontal and temporal brain-compressed groups and dorsolateral herniation in parietal and occipital brain-compressed groups, respectively. Microscopic examination revealed that the secondary brain-stem hemorrhages were mostly caused by venous bleeding secondary to venous congestion, the bleeding being more severe in occipital brain-compressed group. As the intracranial pressure was raised by expansion of a supratentorial balloon, the late components of the BSEP were suppressed first, followed by the suppression of the early components. In BSEP recording. a significant change was observed in Vth wave with prolongation of latency and decrease in amplitude. This finding suggests that the midbrain is the most vulnerable to compression ischemia. In parietal group, the Vth wave started to be prolonged at 0.4㎖ of balloon expansion and totally disappeared at 1.8㎖ of expansion.
運動 Pattern과 反應時間의 關係에 對하여 : 그 發達的 變化와 性差를 中心으로 developmental changes and setual differances
林世駿,田炳冠 慶熙大學校 體育科學大學 1992 體育科學論叢 Vol.- No.5
As Childern age, Pertormance improves. There are many variaves discussd in the development literature tod which these xhages in performance are atteibuted. Those mentined most freguently are physical hrowth, biomechamical and physiolgical factors. Ovedviews of these factors have been presented elsewhere. Reaction time ezperments have often been used to investihate developmental variales affecting the motor output processl. In mormal Subjedts, the premotor reaxeion time (PMT) of the biceps braxhii has been determined to be different in fletion(F) and Supination(S) of the forearma. Accordingly, nedause the Same muscled performs in both functioms and PMT, of those two different mivement patterns are defintity different, this would suggest that these two volun tary movuments woule be separately arganized in the developmental changes and secusl differences of these motor out put systemes by means of those reaction time tusks and collect imformation with respect to which these changes in performance are attribted. The Subkedts for the present stndy are 100male children (20 subjets from seven to eleven years old, repectively) and 98 temale children (20 subjects in each age category, except mine-years old). the were all hight handed. The tasked of the subjects were the F and the S of right forearm only, responing to a soundsignal as huickly as possble. Mechanjcal redaction times (MTS) of the F and the Swere measured with the digitimer. The premotor reaction times (PMTS) of both movement patterns with the surfaxe EMG of the biceps brachii among the mine, tem and eleven years old groups, respectively wer also measured. Hs the regression coefficiemed of MRT and PMT in the F and the Swere ecthemely significant, motor times (MTS) were obtained by sunbtracting PMTS from MRTS. The main findings in the present study are summarized as follows; 1. MRTS of male and female children shohteced in both movement patterns as they grew older. Those phenomena were especially noticeable between severs and mine years old. 2. MRTS of the F were always shorter than those of the S However, MRT7'S differences between two movemeat patterns disappearred at eleven years old. :'s 3. MRTS of male children in both movement patterns were always shorter than those of ternate children. since PMTS of male and female children in both mowement patterms war not differences in MTS(Peripheral m7t7r functions). f 4. PMTS Which rrlean Central motor functions (motor pattern generator) were not : different for the ‥‥‥ both seces among the mine, ten and eleven years old group, but this function appeared earlier for the female than for the male. However, this function of the male was supericr to that of the female from tem yearn old. from the present results two different motor fumct iens (motor out pat and fetor patteln generators) were considered which showed the devebpmental changes of reaction time in two different movement patterns.