• Title/Summary/Keyword: P·I Control

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Biological Control of Plant Diseases With Bacillus Species

  • Li, Debao
    • Proceedings of the Korean Society of Plant Pathology Conference
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    • 1994.06a
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    • pp.75-85
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    • 1994
  • Biocontrol is playing a more and more important role in plant disease management. Evidences show that there are optimum prospects for people to apply biocontrol approach to control plant disease or to study the mechanism of antagonism.“The study of Antagonistic Protein of Bacillus spp.to Xanthomonas oryzae pv. oryzae”has been worked in our laboratory since 1986. One hundred and thirty antagonistics bacteria were screened out, most of them belonged to Bacillus spp., and showed very strong inhibitive effect to various plant pathogens. Nine antagonistic proteins (peptides) were purified (P11-I, P11-II, B8, B826-I, B826-II, A30-I, A30-II, G35). Two antagonistic protein related DNA fragments (B826-I, A30-II) were cloned and sequenced. B826-I DNA fragment composed by 905 bp, and it contained two ORF encoding 95, and 54 amino acids, respectively. By using Rifr and Kamr as the selective markers, we found the bacteria could colonize on rice leaf for at least 40 days. In greenhouse the antagonistic bacteria showed certain degree of control efficiency.

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An experimental study on the impact of an agreement on the means to achieve nursing goals in the early postpartum period of primiparous mothers and enhance their self-confidence and satisfaction in maternal role performance (산욕초기 초산모의 간호목표달성방번 합의가 어머니 역할수행에 대한 자신감 및 만족도에 미치는 영향에 관한 실험적 연구)

  • 이영은
    • Journal of Korean Academy of Nursing
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    • v.22 no.1
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    • pp.81-115
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    • 1992
  • The problem addressed by this study was to determine the effect of nurse - patient agreement on the means to achieve nursing goals in the early postpartum period of primiparous mothers. It was hypothesized that the experimental treatment would result in hegher self-confidence and satisfaction in maternal role performance. This purpose was to contribute to the planning of nursing care to enhance self- confidence and satisfaction in maternal role performance and to the development of relevant nursing theory. Especially, the early postpartum period is crucial toward in recovery from childbirth and attainment of the maternal role. Maternal role attaintment is a complex social and cognitive process of stimulus -response accomplished by learning. Most women attain the maternal role sucessfully. But, some primiparous mothers experience difficultites in attainment of the maternal role due to lack of experience and knowledge. Self-confidence and satisfaction in maternal role performance are important factors in attainment and adjustment to the maternal role (Mercer, 1981a, 1981b ; Lederman, Weigarten, and Lederman, 1981 :Bobak and Jensen, 1985). Nursing is defined as behaviors of nurses add patients that attain nursing goals through action, reaction, interaction, and transaction. For attainment of nursing goals, active participating transactions must occur by agreement on the means to achieve those goals through nurse -patient mutual goal setting and establishment of their active relationships(King, 1981, Ha, 1977). Based on King's theory of goal attainment (1981), this stuy was planned as a non-equivalent control group, non -synchronized quasi -experimental design using agreement on the means to achieve nursing goals in early postpartum as the experimental treatment. The data were collected from July 20 to Sep. 1, 1991 by questionnaires with 60 primiparous mothers planing to breast feed after normal deliveries at W hospital in Pusan, Korea. The subjects were divided into a control group(conventional group) -those admitted from July 20 to Aug. 12, and an experimental group(agreement group) - those admitted from Aug. 13 to Sep. 1. The instument for agreement on the means to nursing goals in the early postpartum period included five steps - identification of disturbances of problems through action, reaction, and interaction with primiparous mothers : mutual early postpartal nursing goal setting : exploration of the means to achieve goals ; agreement on the means (self- care, ealry maternal -infant contact, performance of mothering behavior, and communicating about the infant's behavior and health condition) : implementation of the means. This instrument was developed on the basis of King's elements that lead to transactions in nurse-patient interactions. Lederman et al's (1981) scale for Confidence in ability to cope with tasks of motherhood and Lederman et al's(1981) scale for Mother's satisfaction with motherhood and infant care were used to measure self-confidence and satisfaction in maternal role performance ·with the subjects immediately after admission and on the day of discharge. Self-care performance in the experimental group was measured by self -evaluation tool developed by the investigator from the literature concerned. The tools to measure Pelf-confidence and satisfaction in maternal role performance, and the tool to measure self-evaluation of self-care performance were tested for internal reliability. Cronbach's Alphas were 0.94, 0.94, and 0.63. The data were analysed by using in S.P.S.S. computerized program and included percentage, x²-test, t-test, ANOVA, and Pearson Correlation Coefficient. The conclusions obtained from this study are summerized as follows : 1. The degree of self-confidence in maternal role performance of the total subjects group measured before the experimental treatment was above average with a mean score of 2.77(range 2.14-3.64). Out of 14 items, those with relatively high mean scores were ‘I would like to be a better mother than I am’(3.95), and ‘I have my doubts about whether I am a good mother’(2.87). Those with low mean scores were ‘I know that my baby wants most of the times’(2.28), ‘When the baby cries, I can tell what she /he wants’(2.37), and ‘I have confidence in my ability to care for the baby’(2;50). That is, the self - confidence of Primiparous mothers was considerably high in mothering, but rather low in activities concerning the infant care and understanding of the infant behavior. The degree of satisfaction in maternal role performance of the total subjects group measured before the experimental treatment was high with a mean score of 3.18(range 1.92-3.92). Out of 13 items, those with relatively high mean scores were ‘I am glad 1 had this baby now’(3.75), ‘I play with the baby between feedings when s/he is awake and quiet’(3.67), and ‘I enjoy being a mother’(3.27). Those with low mean scores were ‘I am upset about having too many responsibilities as a mother’(2.78), ‘It bothers me to get up for the baby at night’(2.82), and ‘I get annoyed if the baby frequently interrupts my activities’.(2.82), That is, the satisfaction of primiparous mothers was considerably high in mothering and infant care, but rather low in restraints in time or on the mother's self accomplishment and development. 2. Agreement on the means to achieve nursing goals in the early postpartum period included process of mutual goal setting, exploration of the means to achieve goals, and ahreement in concert means to achieve goals based on the mothers' condition, concerns, self-perception of the nurse - patient interactions. In the process of agreement, there was agreement that the means to achieve goals should be through trust and establishment of active relationships with the nurse through identification of problems according to planned nursing goals and active interaction, such as explanations, teaching, changing of opinions, acceptance or rejection of explanations, and proposing of questions. Therefore agreement on the means to achieve nursing goals in the early postpartum period appears to be an effective nursing intervention for primiparous mothers. 3. The degree of self- confidence in maternal role performance of the exprimental group was higher than that of the control group(t=3.95, p<0.01). Out of 14 items, those with higher score in the experimental group were ‘I would like to be a better mother than I am’(t=1.93, p<0.05), ‘I know that my baby wants most of the times’(t=2.75, p<0.01), ‘When the baby cries, 1 can tell what she/he wants’(t=2.10, p<0.05), ‘I have confidence in my ability to care for the baby’(t=3.72, p<0.01), ‘I trust my own judement in deciding how to care for the baby’(t=1.96, p<0.05), ‘I feel that I know my baby and what to do for him /her’(t=2.44, p<0.01), ‘I am concerned about being able to meet the baby's needs’(t=2.87, p<0.01), ‘I know what my baby likes and dislikes’(t=3.26, p<0.01), ‘I don't know to care for the baby as well as I should’(t=2.07, p<0.05), and ‘I am unsure about whether I give enough attention to the baby’(t=3.04, p<0.01), That is, the degree of self-confidence in mothering, activities concerning infant care, and understanding of infant behavior of the experimental group was higher than that of the control group. Therefore, the first hypothesis, that the degree of self-confidence in maternal role performance of the experimental group would be higher than that of the control group, was supported(t=3.95, p<0.01). 4. The degree of satisfaction in the maternal role performance of the exprimental group was higer than that or the control group(t=2.31, p<0.05). Out of 13 items, those with higher score in the experimental group were ‘I am glad I had this baby now’(t=2.29, p<0.05), ‘I enjoy taking care of the baby’(t=2.4g, p<0.01), ‘It is boring for me to care for the baby and do the same thing over and over’(t=2.87, P<0.01), ‘I am unhappy with the amount of time I have for activities other than childcare’(t=2.51, p<0.01), and ‘When bathing and diapering the baby, I would like to be doing something else’(t=2.43, p<0.01). That is, the degree of satisfaction in mothering, infant care, and restraints in time of on the mother's self accomplishment and development in the experimental group was higher than that of the control group. Therefore, the second hypothesis, that the degree of satisfaction in maternal role performance of the experimental group would be higher than that of the control group, was supported(t=2.31, p<0.05). 5. The third hypothesis, that the higher the degree of satisfaction in materenal role performance, the higher the degree of self-confidence in materenal role performance in the experimental group, was supported (r=0.57, p<0.01)

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Development of Shape Optimization System using Stress Control (응력 제어를 통한 형상 최적화 시스템 개발)

  • 한석영;배현우
    • Journal of the Korean Society of Manufacturing Technology Engineers
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    • v.8 no.3
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    • pp.52-58
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    • 1999
  • In this study, the growth-strain method was used for shape optimization. The adequate value of growth ratio in the method was used the value obtained by volume control. And the linear PID control theory was applied to control internal stresses by stresses required by a designer. The effect of the values of $K_{P}$, $K_{I}$, and $K_{D}$ was investigated and the adequate values of $K_{P}$, $K_{I}$, and $K_{D}$ were determined empirically. Finally, a shape optimal design system was built up by the improved the growth-strain method with a commercial software I-DEAS. The effectiveness and practicality of the developed shape optimal design system was verified by some examples.les.les.les.

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Analysis of I-P Curve Characteristics by the temperature of Solenoid Valve for Automatic Transmission (자동변속기 SOLENOID 밸브의 온도에 의한 전류(I)-제어압(P)특성 분석)

  • Choi, Y.Y.;Seo, S.H.;Lee, S.H.;Yang, H.S.
    • 유공압시스템학회:학술대회논문집
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    • 2010.06a
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    • pp.7-11
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    • 2010
  • Various transmission technologies have been developed to satisfy environmental issues recently. Especially, the technology of the proportional control solenoid valve (PCSV) to ensure high level performance by electronic control has been studied. This study builds an analysis process for designing of the PCSV and characteristic predictions.

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Effects of Preemptive Analgesia with Parecoxib Sodium on Haemodynamics and Plasma Stress Hormones in Surgical Patients with Thyroid Carcinoma

  • Wang, Lian-Dong;Gao, Xia;Li, Jun-Ying;Yu, Hong-Yan;Su, Hai-Wen;Liu, Lian-Zhong;Qi, Jun
    • Asian Pacific Journal of Cancer Prevention
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    • v.16 no.9
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    • pp.3977-3980
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    • 2015
  • Background: To investigate the effects of preemptive analgesia with parecoxib sodium on haemodynamics and plasma stress hormones in surgical patients with thyroid carcinoma. Materials and Methods: Fifty-seven patients with thyroid carcinoma who underwent thyroidectomy selectively in Laiwu Hospital Affiliated to Taishan Medical University and Binzhou People's Hospital were selected and randomly divided into three groups, 19 cases in each group. The control group was intravenously injected 0.9% sodium chloride injection before anesthesia induction; trial group I was intravenously injected with parecoxib sodium 20 min before anesthesia induction; based on trial group I, trial group II was injected with parecoxib sodium again 12 h after surgery. The levels of plasma norepinephrine (NE), cortisol (Cor) and blood glucose before, 12 and 24 h after surgery and changes of haemodynamics before surgery, at the end of surgery and 12, 24 and 48 h after surgery were compared in the three groups. Besides, visual analogue scale (VAS) scores were recorded 4, 8, 12 and 24 h after surgery. Results: 12 and 24 h after surgery, the levels of plasma NE and Cor in three groups rose dramatically (P<0.05 or (P<0.01); The levels of plasma NE and Cor in trial groups I and II were evidently lower than in control group (P<0.05 or P<0.01), and those in trial group II slightly lower than in trial group I. 12 h after surgery, the heart rates (HR) and systolic pressures (SBP) in trial groups I and II increased obviously by comparison to surgery before (P<0.05 or P<0.01), but gradually returned to the preoperative level. HR, SBP and diastolic pressures (DBP) in trial groups I and II at the end of surgery and 12 h after surgery were all lower than in the control group, and significant differences were present (P<0.05 or (P<0.01). At 4, 8, 12 and 24 h after surgery, VAS scores in trial groups I and II were markedly lower than in the control group (P<0.05 or (P<0.01), the scores in trial group II being the lowest. Conclusions: Combined application of parecoxib sodium for preemptive analgesia before anesthesia and after surgery can effectively reduce the levels of plasma stress hormones and improve analgesic effects in surgical patients with thyroid carcinoma, and without conspicuous impact on haemodynamics.

Studies on blood chemistry by experimental administration of prednisolone acetate in dogs (Prednisolone acetate의 실험적 투여에 의한 개의 혈액화학치에 관한 연구)

  • Pi, Young-hyuk;Kim, Hae-young;Lee, Byeong-han;Kim, Jin-young;Lim, Joa-jin;Lee, Dong-hee;Chang, Kyung-jin;Chung, Byung-hyun
    • Korean Journal of Veterinary Research
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    • v.37 no.1
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    • pp.221-233
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    • 1997
  • The studies were carried out to investigate the changes in the activities of glucose, ALT, ALP, GGT, cholesterol, $T_3$, and cortisol among the serum when the dogs were administered the prednisolone acetate. The experiments were designed to 3 groups and twenty-four dogs were randomly assigned to 3 groups of 8 dogs each. In groups I, each dog was injected 1mg of prednisolone acetate/kg/day for 14 days, intramuscularly. In groups II, 10mg of prednisolone acetate/kg/day for 14 days. And in the control group, 0.1ml of saline daily for 14 days. The results were summarized as follows: 1. In group I, II and control, mean serum glucose activities remained in the normal range during the study. 2. In group I, mean serum alanine aminotransferase(ALT) activities slowly increased until day 3, than reached the maximum(317IU/l) until day 21, and then decreased in 32.3IU/l until day 40(p<0.005). In group II, reached the maximum(184IU/l) until day 3, and gradually decreased in 140IU/l until day 54(p<0.001). 3. In group I, mean serum alkaline phosphatase(ALP) activities reached the maximum (786IU/l) until day 12 and gradually decreased in 153IU/l until day 47(p<0.001). In group II, reached the maximum(381IU/l) until day 24 and rapidly decreased in the range of control until day 33. 4. In group I, mean serum GGT activities reached the maximum(29.3IU/l) until day 12, and slowly decreased in the range of control until day 47(p<0.005). In group II, reached the maximun(102IU/l) until day 54(p<0.005). 5. Mean serum cholesterol activities of group I decreased than those of control(p<0.05). In group II, decreased than those of control(p<0.05). 6. In group I, mean serum $T_3$ activities reached the maximum(32.8ng/dl) until day 12 and increased in the range of control until day 21(p<0.05). In group II, gradually decreased in 25.1ng/dl until day 12, then decreased under the level of 25ng/dl from day 15 to day 40, and then gradually increased but remained under the range of control(p<0.001). 7. In group I, mean serum cortisol activities slowly decreased and reached the minimum($0.4{\mu}g/dl$) until day 18(p<0.001), and then increased in the range of control until day 47. In group II, rapidly increased and reached the maximum($22.1{\mu}g/dl$) until day 12(p<0.05), but decreased to the minimum($0.64{\mu}g/dl$) until day 40, and then increased in the range of control until day 47.

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Design of Web Based Parallel I/O Control System Using IEEE 1284 Operating Modes (IEEE 1284 동작 모드를 사용하는 웹 기반 병렬 I/O 제어 장치의 설계)

  • Chang, Ho-Sung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.3
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    • pp.991-996
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    • 2010
  • In this paper, we designed a parallel I/O control system using IEEE 1284 operating modes and implemented remote control communication under the internet environment. The IEEE 1284 standard defines an interface compatible with several distinct operation modes and brings higher performance to the PC parallel port. Therefore, parallel port devices become easier to configure and simplify interface because new operating systems bring PnP function to the parallel port with the Device/ID identification sequence. With these enhancements, the parallel port become an even better low-cost, readily available I/O port on the PC.

Immunocontraceptive Effects in Male Rats Vaccinated with Gonadotropin-Releasing Hormone-I and -II Protein Complex

  • Kim, Yong-Hyun;Park, Byung-Joo;Ahn, Hee-Seop;Han, Sang-Hoon;Go, Hyeon-Jeong;Lee, Joong-Bok;Park, Seung-Yong;Song, Chang-Seon;Lee, Sang-Won;Choi, In-Soo
    • Journal of Microbiology and Biotechnology
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    • v.29 no.4
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    • pp.658-664
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    • 2019
  • Immunocontraception has been suggested as an optimal alternative to surgical contraception in animal species. Many immunocontraceptive vaccines have been designed to artificially produce antibodies against gonadotropin-releasing hormone-I (GnRH-I) which remove GnRH-I from the vaccinated animals. A deficiency of GnRH-I thereafter leads to a lack of gonadotropins, resulting in immunocontraception. In this study, we initially developed three immunocontraceptive vaccines composed of GnRH-I, GnRH-II, and a GnRH-I and -II (GnRH-I+II) complex, conjugated to the external domain of Salmonella Typhimurium flagellin. As the GnRH-I+II vaccine induced significantly (p < 0.01) higher levels of anti-GnRH-I antibodies than the other two vaccines, we further evaluated its immunocontraceptive effects in male rats. Mean testis weight in rats (n = 6) inoculated twice with the GnRH-I+II vaccine at 2-week intervals was significantly (p < 0.01) lower than in negative control rats at 10 weeks of age. Among the six vaccinated rats, two were non-responders whose testes were not significantly reduced when compared to those of negative control rats. Significantly smaller testis weight (p < 0.001), higher anti-GnRH-I antibody levels (p < 0.001), and lower testosterone levels (p < 0.001) were seen in the remaining four responders compared to the negative control rats at the end of the experiments. Furthermore, seminiferous tubule atrophy and spermatogenesis arrest were found in the testis tissues of responders. Therefore, the newly developed GnRH-I+II vaccine efficiently induced immunocontraception in male rats. This vaccine can potentially also be applied for birth control in other animal species.

Effect of Addition Methods of Green Tea on Fermentation Characteristics of Kimchi (녹차의 첨가방법이 김치의 발효특성에 미치는 영향)

  • 김경희
    • Food Science and Preservation
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    • v.9 no.4
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    • pp.406-410
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    • 2002
  • This study was conducted to investigate the effect of addition methods of green tea on the fermentation characteristics of kimchi. Kimchis were prepared to 3 methods such as Chinese cabbage soaked in brine containing 1% of green tea extracts(Ⅰ), salted the cabbage soaked in water containing 1% of green tea extracts(II), salted the cabbage mixed with seasonings containing 1% of green tea extracts(Ⅲ), and fermented at l0$\^{C}$. pH of Ⅰ∼Ⅲ kimchis were higher than that of control kimchi during fermentation and its acidity showed the same tendency. Total microbe(5.40∼8.38 log cfu/mL) and the number of lactic acid bacteria(4.99∼8.07 log cfu/mL) in Ⅰ∼Ⅲ kimchis were lower than those of control kimchi(6.16∼9.29 and 4.59∼8.42 log cfu/mL). Lightness of kimchi tissue showed the order of Ⅰ<II<control<Ⅲ. Sour taste and fishy taste of Ⅰ∼Ⅲ kimchis were lower than that of control kimchi. Overall quality was best in II estimated by sensory evaluation and fermentation characteristics.

A New Design Method for T-S Fuzzy Controller with Pole Placement Constraints

  • Joh, Joongseon;Jeung, Eun-Tae;Chung, Won-Jee;Kwon, Sung-Ha
    • Journal of the Korean Institute of Intelligent Systems
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    • v.7 no.3
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    • pp.72-80
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    • 1997
  • A new design method for Takagi-Sugeno (T-S in short) fuzzy controller which guarantees global asymptotic stability and satisfies a desired performance is proposed in this paper. The method uses LMI(Linear Matrix Inequality) approach to find the common symmetric positive definite matrix P and feedback fains K/sub i/, i= 1, 2,..., r, numerically. The LMIs for stability criterion which treats P and K'/sub i/s as matrix variables is derived from Wang et al.'s stability criterion. Wang et al.'s stability criterion is nonlinear MIs since P and K'/sub i/s are coupled together. The desired performance is represented as $ LMIs which place the closed-loop poles of $ local subsystems within the desired region in s-plane. By solving the stability LMIs and pole placement constraint LMIs simultaneously, the feedback gains K'/sub i/s which gurarntee global asymptotic stability and satisfy the desired performance are determined. The design method is verified by designing a T-S fuzzy controller for an inverted pendulum with a cart using the proposed method.

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