• 농업기술회보
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• v.48 no.4
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• pp.42-42
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• 2011

감귤재배 시 반드시 필요로 하는 양분 중의 하나인 붕소는 잎에서 광합성 작용으로 만들어진 당분을 과실, 뿌리 및 줄기 등으로 이동하도록 돕는다. 하지만 적은 양으로 민감하게 피해현상이 발생하므로 일반 온주밀감재배에는 붕소를 별도로 거의 시용하지 않았다. 그러나 최근 신품종이 보급되면서 특이 품종에서 붕소의 결핍증상이 쉽게 나타나고 있어 이에 대한 사례와 결핍 시 방지대책과 과잉으로 사용 시 나타나는 피해증상을 조사했다.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.11 no.2
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• pp.122-129
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• 2008

Purpose: Patients with chronic gastrointestinal disease are at risk for trace element deficiency due to impaired absorption and gastrointestinal loss. The aim of this study was to evaluate the trace element status of patients with gastrointestinal disease by blood and hair analysis, and to determine the usefulness of hair mineral analysis for diagnosing trace element deficiency not detected by a blood test. Methods: An analysis of hair minerals was performed and compared with blood mineral analysis in 13 patients with chronic gastrointestinal disease. The concentration of each element in the hair and blood was compared in the subgroups based on parenteral nutritional support or clinical symptoms. Results: Almost all patients had trace element deficiency. The trace elements deficient in the blood or hair analysis included zinc, selenium and copper. The hair zinc concentration was significantly lower in the group receiving parenteral nutritional support. The hair selenium concentration was statistically associated with the clinical symptoms of hair loss, brittle hair and loss of hair pigmentation. Conclusion: The results of this study suggest that patients with chronic gastrointestinal disease should receive adequate zinc and selenium replacement to avoid trace element deficiency especially when treated with long-term parenteral nutrition. Hair mineral analysis is useful as a complementary tool for the detection of a trace element deficiency.

• 월간낙농육우
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• s.114
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• pp.63-67
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• 1991

• 월간낙농육우
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• s.115
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• pp.64-69
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• 1991

• 월간낙농육우
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• s.113
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• pp.70-75
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• 1991

• 월간낙농육우
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• s.116
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• pp.94-100
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• 1991

• Journal of Bio-Environment Control
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• v.17 no.3
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• pp.238-245
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• 2008

This study was carried out to investigate the effect of magnesium (Mg) concentrations in nutrient solution on growth of and nutrient uptake by 'Maehyang' strawberry. Tissue analysis based on dry weight and petiole sap were also conducted to determine the threshold level in plants when Mg deficiency disorders developed in strawberry plants. In the Mg deficient plants, the spotted yellowing or yellowing area developed on the interveinal area of mature leaves. The dark brown color also developed on the interveinal area of mature leaves with marginal browning or marginal necrosis. The response in dry weight production of 'Maehyang' strawberry to elevated Mg concentrations in nutrient solution was quadratic and the equation is y=6.84+1.7533x-$0.9278x^2$ $(R^2=0.1081^{***})$. But the Mg contents in tissue increased lineally with the equation of y=0.1764+0.1275x $(R^2=0.8307^{***})$. The trends of fresh weight production and Mg concentrations in petiole sap were also quadratic (y=24.127+7.3565x-$1.125x^2$, $R^2=0.2314^{^***}$) and linear (11.954+5.793x, $R^2=0.6869^{***}$), respectively. To prevent growth suppression, the Mg concentrations based on dry weight of above ground tissue and in petiole sap should be in the range of 0.30 to 0.65% and 19 to $40mg{\cdot}kg^{-1}$, respectively, fer the commercial production of 'Maehyang' strawberry.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.8 no.4
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• pp.93-100
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• 1987

• Pediatric Gastroenterology, Hepatology & Nutrition
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• v.2 no.1
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• pp.123-129
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• 1999

Transient symptomatic zinc deficiency (TSZD) is clinically similar to acrodermatitis enteropathica. The patients are experienced dermatitis on periorifice and extremities, alopecia, diarrhea, growth retardation, anemia, delayed wound healing and infection. They showed a characteristically rapid response to zinc supplement without recurrence. We report 3 cases of TSZD infants, 2 premature infants with inadequate zinc supply and 1 mature infant with chronic diarrhea.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.7 no.2
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• pp.213-223
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• 1996

This study was performed to assess depression/anxiety of attention deficit hyperactivity disorder(ADHD) in children and adolescents and to use them as basic material for subdivied ADHD on phenomenological aspects. 51 hospitalized ADHD children and adolescents were assessed using the Korean form of the Kovacs' Children's Depression Inventory(CDI), Korean Form of the State-Trait Anxiety Inventory for Children(STAIC). Their data were compared to normal control of 50 mentally healthy children and adolescents in relation with the dermographic characteristic. The mean scores of CDI and STAIC-5(State) of ADHD group were statistically higher than those of the control group(p<0.01 or p<0.05). The mean scores of STAIC-T(Trait) of ADHD group were higher than those of the control group. These results suggest that the authors suggest that ADHD can be subdivide into pure ADHD, depressive ADHD and anxious ADHD by the comorbidity of the depression/anxiety.