One-step selective synthesis of 2-chlorobenzonitrile from 2-chlorotoluene via ammoxidation

B., H.,T., V.,Y.W., S.,P.S., S.,N., L. Royal Society of Chemistry 2018 New journal of chemistry Vol.42 No.3

A Comprehensive Literature Study on Precision Agriculture: Tools and Techniques

Bh., Prashanthi,A.V. Praveen, Krishna,Ch. Mallikarjuna, Rao International Journal of Computer ScienceNetwork S 2022 International journal of computer science and netw Vol.22 No.12

Due to digitization, data has become a tsunami in almost every data-driven business sector. The information wave has been greatly boosted by man-to-machine (M2M) digital data management. An explosion in the use of ICT for farm management has pushed technical solutions into rural areas and benefited farmers and customers alike. This study discusses the benefits and possible pitfalls of using information and communication technology (ICT) in conventional farming. Information technology (IT), the Internet of Things (IoT), and robotics are discussed, along with the roles of Machine learning (ML), Artificial intelligence (AI), and sensors in farming. Drones are also being studied for crop surveillance and yield optimization management. Global and state-of-the-art Internet of Things (IoT) agricultural platforms are emphasized when relevant. This article analyse the most current publications pertaining to precision agriculture using ML and AI techniques. This study further details about current and future developments in AI and identify existing and prospective research concerns in AI for agriculture based on this thorough extensive literature evaluation.

Effect of poloxamer 407 content on drug release from a multiparticulate pellet system

BH Kim,SW Lee,JH Bae,ES Park,SC Chi 大韓藥學會 1999 大韓藥學會 總會 및 學術大會 Vol.48 No.-

한국인에서 혈우병B 유전자 ( 혈액응고인자 IX ) 의 구조 및 제한 요소 절편길이 다형성에 관한 유전의학적 고찰 (1)

오보훈(BH Oh),권문식(MS Kwon),전봉균(BK Jeon),이풍연(PY Lee) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.6

DNA-based prenatal diagnosis or carrier detection for hemophilia B in Korean has been develpoed by RFLPs. The polymorphisms were Taq I and Xmn I. Genomic DNAs were extracted from the blood of 56 females and 10 males at the age of twenty. The PCR primers were chemically synthesized by the method of phosphoramidite. Taq I-59, and -39, derived from the flanking sequences of intron 3 allow amplification 222 bp fragment. Using Ploymerase chain reaction(PCR) method, each segment(intron 3-Xmn I, intron 4-Taq I) was amplified with each primers and the genomic DNA as template. The amplified DNA fragment was treated with an appropriate restriction enzyme. The Xmn I polymorphism of the factor IX gene was detected on agarose gel as segments of 154 bp and 68, respectively. The heterozygote frequency , calculated from the allele frequencies (0.025/0.975) in intron 3-Xmn I polymorphism, was 4.8%. In case of intron 4-Taq I polymorphism there is no polymorphic site. So that the heterozygote frequency calculated from the allele frequencies (0.0/1.0) in intron 4-Taq I polymorphism was 0%. Thus the two intragenic polymorphisms predicted to be informative was 4.8% in this study. The results are not correlated with those obtained from the Caucasian. It suggests that Korean exhibit defferent patterns of Xmn I and Taq I polymorphism in the human coagulation factor IX gene.

뇌융모암의 1예 보고

오보훈(BH Oh),유장희(CH Yu),이경희(KH Lee),강소자(Kang SJ),이동현(Lee DH) 대한산부인과학회 1973 Obstetrics & Gynecology Science Vol.16 No.7

A case of metastatic choriocarcinoma of the brain was reported with it`s clinical course and brief reivew. The reported case was a 32-yr-old Korean woman who had undergone craniotomy for the extirpation of tumor mass in the left fronto-temporoparietal region on Nov. 11, 1971 and followed by chemotherapy. The pathological diagnosis was metastatic choriocarcinoma of the brain. The chest X-ray revealed metastatic coin lesions in entire lung field. The patient expired on Sep. 2, 1972 because of pulmonary metastasis of choriocarcinoma.

난관소통검사와 여성불임

이병한(BH Lee) 대한산부인과학회 1977 Obstetrics & Gynecology Science Vol.20 No.12

In female infertility, the most causative factor is that of tubal origin. In present days, many diagnostic methods and tools are used in reserch for infertility, but there is no simple and reliable test for tubal patency. Among them the kymographic uterine insufflation test or Rubin test are simple in uwe but has many discussions in correctness. Through a clinical, statistical survey for female infertility, a comparative study between the hysterosalpingography and laparoscopic chomopertubation is made as followings; 1. Among the total 7679 cases of the outpatients which had examined at Dept. of OB & GY of chonnam National university Hospital for past 2 years, 340 cases (4.4%) were infertile. 2. The rate of primary infertility (57.4%) was larger than that of secondary. The age below 30 in primary and from 30 to 35 in secondary was the most common but the duration of imfertility in both had no significance. 3. The kymographic patency test was performed in half of the patients, but no significance was there between the kymographic patency test and duration of infertility. 4. Among the total 188 patients, complete occlusion was noticed in 65 cases (34.6%), of which primary 43 and secondary 22 were included. 5. the 96% of primary infertility patients had no specific illness in history, but in secondary infertility, 91.3% (73 cases) were related with the last pregnancy and labor. Also a history for spontaneous and artificial abortion was recorded in over the half of the total cases. Tubal occlusion in surgical illness was more higher than other diseases. 6.A comparative study between kymographic tubal patency test and hysterosal pingography showed some disagreement of 37.5% of total cases including the 29% of partial patent and the 40% of complete obstruction detected by the former. 7. A comparative study between kymographic tubal patency test and laparoscopic chromopertubation showed some disagreement 45.2% of total cases including the 25% of patent, the 66.7% of partial patent and the 45.8% of complete obstruction detected by the former.

산후자간에 관하여 ( 1964.1 - 1966.12 )

우복희(BH Woo),조행원(HW cho),김수자(SJ Kim),이일준(IJ Rhee) 대한산부인과학회 1968 Obstetrics & Gynecology Science Vol.11 No.7

Postpartum eclampsia is one of the serious complication during the puerperium although it is not common. We have encountered 13 cases of postpartum eclampsia which occured smong a total of 6040 deliveries in Ewha Womans University Hosptial, Seoul during the period from 1964 to 1966, the incidence being one case per 500 deliveries, Postpartum eclampsia constitues approximately 2.8% of all cases of Toxemia or 31% of all cases of eclampsia. Over all the incidencies were considered very high. 1. The majority cases (92%) of Postpartum eclampsia were occurred in the multiparas, and that never had prenatal cares (91%). Approximately 2/3 cases of Postpartum eclampsia have occurred after home delivery without modern obstetrical care (poor socio-economic group). 2. It is emphasized that careful Pstpartum care during first 5-10 days of puerperium shoud not be neglected to prevent or minimize these or other postpartum complications. 3. October is the peak month for Postpartum eclampsia in Seoul. This was similar to that of occurred in Miami area, although it is uncertain that whether or not it could be corelated with the mean temperature or the mean relative humidity. 4. The severity of Postpartum eclampsia depended on the degree of elevation of uric acid, and also the delayed occurrence appeared to be more severe with increased convulsion. 5. A careful study of family history seemed very important even in the puerperium since perfectely normotensive mother having family history of hypertension particularly on the parents side appeared to be a good candidates for the sudden onset of post partum eclampsia. 6. The mean weight of newborn baby from the mother of postpartum eclampsia was decreased approximately 650-850 Gm as compared with normaly expectant newborn weight, however there was no fetal death.

지속임신 81례에서 시행한 경질식 융모막채취법

오보훈(BH Oh),변수열(SY Byun),이동호(DH Lee),임재훈(JH Lim) 대한산부인과학회 1991 Obstetrics & Gynecology Science Vol.34 No.5

We present here experiences of 81 cases with transcervical chorionic villus sampling(CVS) at Kyung Hee University Hospital. At Kyung Hee University Hospital, we have currently performed CVS in continuing pregnancy since February, 1989. As of end-September, 1989, we performed transcervical CVS in 81 pregnant women. The cytogenetic analysis routinely used were direct(cytotrophoblast) and culture(mesenchymal core) karyotyping. Overall success rate in obtaining villi samples is 95.1%(77/81 subjects), and mean amount of recovered villi is 19.07 10.27 mg and mean number of catheter passes is 1.73 0.77. Of 81 attempted cases, spontaneous abortion occurred in one case indication 1.21%(1/81) of abortion rate. Location of chorionic frondosum seems to play a major role in success of transcervical CVS. CVS is most difficult in cases of posterior or fundal location of chorionic frondosum. Neither maternal cell contamination nor culture failure were yet noted in our CVS program.

토끼에서 자궁경을 통한 자궁경부내 세균주입후 조산유발 모델의 확립 및 이에 따른 양수내 감염양상

윤보현(BH Yoon),전종관(JK Jun),최석태(ST Choi),양순하(SH Yang),황종대(JD Hwang),채희동(HD Chae),이유미(YM Lee),김광례(KR Kim),김암(A Kim),신희철(HC Shin),이진용(JY Lee),김승욱(SW Kim) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.10

Background : Bacteral infection has been implicated in premature labor in human. But it is impossible to undergo human study of bacteria-induced preterm delivery. If we carry out animal experiment which simulated human preterm delivery induced by bacteria, investigation for mechanism, diagnosis, and treatment of preterm delivery will be progressed rapidly. These studies are very sparse. We try to introduce a rabbit model of infection induced preterm birth. Objectives : To elucidate mechanisms and potential intervention stategies of preterm pregnancy loss we observed bacteria-induced preterm pregnancy loss and the inoculation of E.coli Study design : we inoculated sterile saline solution(group 1, n=3) or 2X 10^7 cfu(colonyforming units) of E.coli bilaterally in te cervix of pregnant New Zealand White rabbits on day 20 or 21(70% of gestation) by hysteroscopy and assinged animals to control (group 1, n=4) ampicillin sulbactam therapy beginning at 0 to 2 hour group (group 2, n=6) at 16 hours group (group 3, n=2)after inoculation with E.coli. or no antibiotic therapy group (group 4 n=3), Unasyn was used as antibiotics and its daily dosage was 100mg/kg/day. After then we observed vagina bleeding or preterm birth. If one rabbit fetus was found to be delivered, we did exploratory laparotomy. Each fetus was evaluated and amniotic fluid on each sac and decidua on each uterine cavity were cultured. Results : In four control rabbits(0.2cc sterile saline inoculain only), there were no preterm delivery and no bacterial growth in culture media. In all three rabbits in group 4 preterm delivery occured and the culture were all positive in maternal blood culture were all negative. Increased trend in preterm delivery was statisticall significant in the order : group 1 0%(0/4) group 2 0%(0/6) group 3 100%(2/2), group 4 100% (3/3), Number of living babies are decreased significantly as follows: group 1 53.6%(15/28), group 2 45.1%(23/51), group 3 0% (0/11), group 4 3.8% (1/26). Amniotic fluid culture results also had a significantly increased trend(p.

Lipple Loop 삽입중 발생한 자궁외임신 2례

서병희(BH Suh),허주엽(CY Huh),김승보(SB Kim),이원기(WK Lee) 대한산부인과학회 1977 Obstetrics & Gynecology Science Vol.20 No.12

본원 산부인과에서 현재까지 사용되고 있는 일시적 피임방법중 피임효과가 우수하고 편리하며 부작용이 비교적 적다고 알려진 Lippes loop의 희유한 합병증 중 하나인 자궁외임신 2예를 치험하였기에 보고하는 바이다. Two cases of tubal pregnancy associated with use of a loop are presented with a brief review of literatures concerned.