• Korean Parent-Child Health Journal
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• v.2
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• pp.53-63
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• 1999

The purpose of this study is to describe how what influence sexuality has on women's health. Sex is determined by the sex chromosome: but sociocultural norms have much influence on the sex role of a woman or man. Women's sexuality has had a negative impact on them in a male-dominated society, which destroyed women's health, put women in a powerless position and forced them to live as dependent persons. Sociocultural perception of the sex role has not been very open, and very strict rules have controlled those perceptions; but currently these perceptions have been changing dramatically. Especially, women's sex role has changed, bringing about many problems: the number of women engaging in premarital sex, the number of unwed mothers, the number of pregnancies without marriage, the divorce rate, and the number of dysfunctional families have all increased. Those kinds of problems have negative effects on women, children and members of the whole family. Sexually transmitted disease because of free sex is a serious health issue for women: the number of women with AIDS has increased rapidly. Another big issue is sexual abuse, which is insulting to women, decreases women's self-esteem, increases depression, puts women in a powerless position and eventually causes women to get sick. Male-preference (among newborns) ideology raises health issues for women, such as artificial abortion. In the area of sex differentiation, therefore, we have to change people's thinking from male-preference ideology to equal sex preference. Finally, we have to use a holistic approach for women's health and increase awareness of the fact that the sex role and women's health are very important for the family, society and nation. Women's health is the nation's power.

• Development and Reproduction
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• v.25 no.1
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• pp.55-57
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• 2021

Samples were collected from the subtidal region of Jumunjin on the eastern coast of Korea in July 2020. A total of 338 mussels of shell height (SH) 20.8-149.8 mm were used for sex ratio analysis. The sex ratio (F:M) in the same population of mussel Mytilus coruscus was approximately 1:0.7. The sex ratio according to the class of SH was different. The sex reversal pattern of M. coruscus appears to go from male → female → male → female, and as such is determined to be sequential hermaphrodites.

• Journal of Oral Medicine and Pain
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• v.8 no.1
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• pp.127-142
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• 1983

This thesis was to investigate sex defferencd by employing the methodes of Bernadskij's and it's modification by means of the evaluation of pH of dentin in 162 extracted teeth. The obtained were as follows: 1. In 72% of all experinments, pH of human dentin substance was higher in female than in male. Mean pH was 13.175±0.031 in male and 13.245±0.030 in female. 2. After comparative studies on each pH in anatomical region of tooth arrangement, the sex difference of pH was most obviously showed in molars. 3. In pH change according to ages, the 30's was the highest in male and the 20's in female, also pH showed decresing tendency by the increasing of age in both male and female. 4. There was no pH difference in anatomical regions of tooth arrangment. 5. Mean pH was 13.282±0.013 in under 50 years of age and 13.282±0.022 over 50. It proved that pH was higher in under 50 years of age than in over 50.

• International Journal of Industrial Entomology and Biomaterials
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• v.8 no.2
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• pp.123-127
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• 2004

Normally, silkworms, Bombyx mori, generate offspring by sexual activity. As we known, the hybrids of the first generation of the silkworm have higher cocoon production than pure lines. During the sericulture production, many processes are related with sex control. For example, sex sorting in the egg grainages, rearing of only male silkworm to save the mulberry leaf consumption and increase silk output and quality. Therefore it is very interested in understanding the sex control of the silkworm in theory and practice. Chinese sericultural scientists have been being engaged in the researches in the fields of artificifial parthogenesis, dispermic androgenesis, sex-limited varieties, sex linkage balanced lethal strain and high temperature sensitive male stocks for several decades and gained substantial achievement. Some of the achievements have been used in the commercial production. In this review, the authors introduced that the methods for control of the silkworm sex, and regulate the silkworm sex ratio according to different producing aim in the world and especially in China.

• Korean Journal of Child Studies
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• v.7 no.2
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• pp.17-32
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• 1986

The purpose of the present research was to study (1) children's sex-stereotyped perception toward adult occupations, and (2) the impact of traditional sex-stereotypes on future occupational preference. The subjects of this study were 120 children, 3 to 8 years of age enrolled in kindergatens and elementary schools. The instrument was developed by the researcher and consisted of 10 occupations which are traditionally sex-typed in Korean society. 5 male and female sex-typed occupations were selected with the participation of 200 college students. These occupations were illustrated on 10 pictorial cards, and short verbal explanations were given for each of them. It was found that: (1) Levels of children's perception of occupational sex stereotypes show that children aged five to six are marked comparatively higher than those aged three to four in the perception of occupation, children of seven to eight age indicate slightly downward; however, they are not differed significantly from those of five to six. (2) As far as levels of children'5 perception of occupational sex stereotypes aged three to four, five to six and seven to eight are concerned, interaction between age and sex was not shown significantly. Female children were more stereotyped at almost all age levels. (3) Irrespective of sex and age, all subjects were more familiar with male than with female occupations. (4) in the choice of future occupations, boys as well as girls preferred sex-stereotyped occupations for themselves. Boy's choices were more stereotyped than girls', but the number of kinds of occupations chosen by boys and by girls was not different. (5) There was an increase with age in the number of children who gave future occupational choices.

• Journal of Korean Home Economics Education Association
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• v.6 no.1
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• pp.73-92
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• 1994

The purpose of this study is to investigate the need of home economics education on high School male students for purpose, the questions raised in this study are as follows. 1. Does home economics education on high school male students needs\ulcorner and are whether not or home economics education on high school male students need different according to sex, age, edu-cation, income, occupation\ulcorner 2. If home economics education on high school male students need or not. What is the reason of that\ulcorner and are the reason of that different according to sex, age, education, income, occupation\ulcorner 3. If home economics education on high school male students need, what is the contents of home economics education and are that different according to sex, age, education, income, occupation\ulcorner The subjects of the study consisted of 183 men and women in Ch’ong ju City(over 21 years old) The data were analiged by statistical procedures such as frequency, X(sup)2, oneway ANOVA, two-way ANOVA, Duncan’s Multiple Range Test. The major results of the study were summarized as follow: 1. The response rate on home economics education on high school male students was absolutely high(91.8%). of demographic variables, the only sex appeared the significant differences. the men groups responsed higher not to need than the women groups. 2. As the reasons of home economics educations on high School male students needing the respons of the highest response rate were that ‘as family community, family members understant, cooperated, and are responsible with each other or one anther’and that ‘as society becomes in-dustrial gradually, family members have to have the accurate perception, or attitudies on home life’of demographic variables, sex, income, and occupation appeard the significant differences. In the contrast of that, as the reaspon of home economics education on high school male stu-dents not needing, the reasons of the highest. response rate were that ‘as sex, the role is different’and that ‘home economics education needs not essentially to learn through the school education’. and there were not differences according to demographic variables. 3. As home economics education contents for high school mal students, the most need content part was child part. the second content part was family development and family relationships part. There was the significant differences according to all the demographic variables. Particulary, the lower the lever of education, in come and occupation were, the less the degree of need on all content part was.

• Korean Journal of Veterinary Research
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• v.39 no.1
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• pp.189-203
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• 1999

To determine sex of bovine embryos using hamster histocompatibility Y(H-Y) antibodies, bovine compact morulae were incubated for 6 hours in TCM199 supplemented with 10% hamster H-Y antiserum and the embryos with developmental arrest were diagnosed as male embryos, while the embryos showing development during the incubation as female embryos. This presumptive embryo sexing was confirmed by polymerase chain reaction(PCR)method. 1. In the result of hamster sperm cytotoxicity test to measure H-Y antibody titer, the rate of dead sperm was considerably lower in H-Y antiserum absorbed with hamster male splenocytes than in H-Y antiserum absorbed with hamster female splenocytes or H-Y antiserum unabsorbed with splenocytes(p<0.01). 2. The rate of oocytes fertilized in vitro and the rate of blastocysts of the fertilized oocytes were 58.5% and 32.4%, respectively. The rate of blastocysts on day 8 was 15.9%, denoting the highest rate during whole culture period posterior to in vitro fertilization (IVF). 3. The bovine 16 cell and compact morulae embryos incubated in the medium supplemented with hamster H-Y antibodies showed 37.1% and 48.9% of developmental arrest which were diagnosed as male, respectively, and rates of redeveloped embryos from the arrested were 24.1% in 16 cell and 44.3% in compact morulae embryos, respectively, denoting higher rate of sex determination and rate of redevelopment in compact morulae than 16 cell embryos. 4. Bovine compact morulae of Korean cattle and Holstein were treated with hamster H-Y antibodies for sex determination and the rates of developmental arrest(diagnosed as male) were 48.4% for Korean cattle and 47.9% for Holstein, respectively. The rates of redeveloped embryos to blastocyst after treatment were 42.6% for Korean cattle and 41.8% for Holstein, respectively, showing no significant differences of sex determination and redevelopment between both breed. 5. The sex determination of bovine embryos(Korean cattle and Holstein) using hamster H-Y antibodies was diagnosed by PCR for confirmation, denoting the rates of 86.1% for Korean cattle and 85.9% for Holstein male embryos, respectively, and the rates of 91.9% for Korean cattle and 90.1% for Holstein female embryos, respectively, with no significant differences of sex determination between both breed. These results indicated that hamster H-Y antibodies can be usable for sex determination of bovine embryos of Korean cattle and Holstein, the viability of bovine embryos was sustained while being cultured in the medium supplemented with hamster H-Y antibodies of appropriate titer and sex determination of bovine embryos by PCR can be feasible for confirmation.

• Korean Journal of Plant Resources
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• v.16 no.1
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• pp.55-60
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• 2003

The genetic variation of random amplified polymorphic DNA (RAPD) patterns of genomic DNAs was investigated in dioecious plant Rumex acetosa L., which carries different sex chromosome complements in female (2n=12A+XX) and male (2n=12A+XY$_1$Y$_2$). One hundred and twenty random primers consisted of 10-mer were used for PCR amplification. Polymorphic bands were found in 24 primers. Specific bands for female and male were 16 and 18, respectively. Especially, a band of 1,440 bp from the OPC-10 primer was male specific. These sex specific RAPD markers are used to understanding the sex determination mechanism in plants.

• Journal of the Korean Society of Costume
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• v.60 no.3
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• pp.99-109
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• 2010

The purpose of this study was to examine the differences of appearance management behavior and body exposure attitude according to sex role identity. The method of this study was a survey research method by questionnaire. The subjects were 632 college students (male: 302, female: 330) living in Seoul area. The data were analyzed by SPSS program. Analysis methods used were frequency, factor analysis, Cronbach's $\alpha$-reliability coefficient, one-way ANOVA and Duncan's multiple range test. The subjects were divided into 4 types of sex role identity: androgynous, masculine, feminine, and undifferentiated type. The female androgynous group had skin care the most, while the male androgynous type had clothing management and weight control the most among the 4 types. Both male and female androgynous groups had hairstyle care the most. Both the male and female masculine groups wore chest exposing clothes the most, while the female masculine type wore shoulder exposing and leg exposing clothes the most. The female androgynous group showed the highest appearance management expenses.

• Journal of Gastric Cancer
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• v.16 no.1
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• pp.43-50
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• 2016

Purpose: It is well known that old age is a risk factor for postoperative complications. Therefore, this study aimed to explore the risk factors for poor postoperative surgical outcomes in elderly gastric cancer patients. Materials and Methods: Between January 2006 and December 2015, 247 elderly gastric cancer patients who underwent curative gastrectomy were reviewed. In this study, an elderly patient was defined as a patient aged ${\geq}65$ years. All possible variables were used to explore the risk factors for poor early surgical outcomes in elderly gastric cancer patients. Results: Based on multivariate analyses of preoperative risk factors, preoperative low serum albumin level (<3.5 g/dl) and male sex showed statistical significance in predicting severe postoperative complications. Additionally, in an analysis of surgery-related risk factors, total gastrectomy was a risk factor for severe postoperative complications. Conclusions: Our study findings suggest that low serum albumin level, male sex, and total gastrectomy could be risk factors of severe postoperative complications in elderly gastric cancer patients. Therefore, surgeons should work carefully in cases of elderly gastric cancer patients with low preoperative serum albumin level and male sex. We believe that efforts should be made to avoid total gastrectomy in elderly gastric cancer patients.