• Title/Summary/Keyword: Injection practice

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Computational design of mould sprue for injection moulding thermoplastics

  • Lakkannan, Muralidhar;Mohan Kumar, G.C.;Kadoli, Ravikiran
    • Journal of Computational Design and Engineering
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    • v.3 no.1
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    • pp.37-52
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    • 2016
  • To injection mould polymers, designing mould is a key task involving several critical decisions with direct implications to yield quality, productivity and frugality. One prominent decision among them is specifying sprue-bush conduit expansion as it significantly influences overall injection moulding; abstruseness anguish in its design criteria deceives direct determination. Intuitively designers decide it wisely and then exasperate by optimising or manipulating processing parameters. To overwhelm that anomaly this research aims at proposing an ideal design criteria holistically for all polymeric materials also tend as a functional assessment metric towards perfection i.e., criteria to specify sprue conduit size before mould development. Accordingly, a priori analytical criterion was deduced quantitatively as expansion ratio from ubiquitous empirical relationships specifically a.k.a an exclusive expansion angle imperatively configured for injectant properties. Its computational intelligence advantage was leveraged to augment functionality of perfectly injecting into an impression gap, while synchronising both injector capacity and desired moulding features. For comprehensiveness, it was continuously sensitised over infinite scale as an explicit factor dependent on in-situ spatio-temporal injectant state perplexity with discrete slope and altitude for each polymeric character. In which congregant ranges of apparent viscosity and shear thinning index were conceived to characteristically assort most thermoplastics. Thereon results accorded aggressive conduit expansion widening for viscous incrust, while a very aggressive narrowing for shear thinning encrust; among them apparent viscosity had relative dominance. This important rationale would certainly form a priori design basis as well diagnose filling issues causing several defects. Like this the proposed generic design criteria, being simple would immensely benefit mould designers besides serve as an inexpensive preventive cliché to moulders. Its adaption ease to practice manifests a hope of injection moulding extremely alluring polymers. Therefore, we concluded that appreciating injectant's polymeric character to design exclusive sprue bush offers a definite a priori advantage.

Sentinel Lymph Node Imaging in Breast Cancer (유방암에서 전초림프절 영상)

  • Kim, Byung-Tae
    • The Korean Journal of Nuclear Medicine
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    • v.33 no.3
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    • pp.243-246
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    • 1999
  • Currently, dissection of the axillary or regional lymph nodes is considered the standard staging procedure in breast cancer. However, accumulating evidence is becoming available that the sentinel node concept may provide the same or even better staging information. In the case of melanoma, it is proven that the histological characteristics of the sentinel node reflect the histological characteristics of the distal part of the lymphatic basin. Morbidity can be reduced significantly by the use of sentinel node dissection as several authors have reported successful introduction of this technique into clinical practice. But in breast cancer patients, there are signigicant differences in practice relating to the technology, such as radiopharmaceuticals, injection sites, volume of injectate, combination with vital blue dye, preoperative lymphoscintigraphy, etc. Valuable reports on these topics appeared in recent journals. This review is a summary of those reports for nuclear physicians interested in sentinel node detection by lymphoscintigraphy in breast cancer patients.

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Development of a Home Care Nursing Management System for Computerization of Home Care Nursing Practice (가정간호업무 전산화를 위한 가정간호관리 시스템 개발)

  • Yoo, Ji-Soo;Kim, Cho-Ja;Shin, Hye-Sun;Choi, Hee-Jai
    • Journal of Korean Academic Society of Home Health Care Nursing
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    • v.8 no.1
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    • pp.62-73
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    • 2001
  • This study was conducted to develop a home care nursing management system based on the validated and useful data base found through literature review. The contents and structure according to a development procedure for a computer system were as follows. 1. A data base on home care nursing patients was accumulated by putting data respectively in both steps and fields - from selection criteria. basic information. prescription. plan of home visits. to application of nursing process. 2. Accumulated data was classified and designed to search by basic information. drug/injection prescription. examination prescription, treatment prescription. supply. and a record of the nursing process. 3. Various forms of retrieval including graphs were elaborated in terms of diagnosis and intervention aspects.

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Development of a Clinical Nursing Practice Training Simulation Program using Standardized Patient for Nursing Students Focused on Infectious Respiratory

  • Hur, Jung
    • International Journal of Advanced Culture Technology
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    • v.9 no.4
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    • pp.169-179
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    • 2021
  • This study was conducted to develop and apply clinical nursing practice training simulation program using Standardized Patient for Nursing Students focused on infectious respiratory disease. This study is descriptive methodological study. Through prior consideration of documents and educational task of infectious respiratory disease was conducted with interview of clinical specialists of infection control managers. Development of educational task for infectious respiratory disease for Nursing Students went through the content validity. Finally, 10 educational tasks are developed 'knowledge of respiratory infections disease', 'hand washing', 'put on mask', 'lead to put on mask to patients and caregiver', 'intravenous injection via 3way', 'surgical aseptic technique', 'sterilization medical instrument', 'management of contaminated linen', 'infected personnel management manual'. The infectious respiratory disease simulation program was developed based on the ADDIE model and proceeded to 4 steps of analysis, design, development, implementation. The infection control education program included lectures (20 min), skill training (20 min), simulation using standardized patient (20 min), and debriefing (40 min), The collected data were analyzed by descriptive statistics with SPSS program for version 23.0. The results of this study confirmed that the clinical nursing practice training simulation program using standardized patients was effective in infectious respiratory disease of the nursing college students in knowledge of infectious respiratory disease and clinical nursing performance. we found this practical training program for nursing college students to improve knowledge and clinical competency of infection control. we expected that this developed program could be applied to practical training for various infectious control.

Acupuncture and blood borne viral infections: a brief summary

  • Wiwanitkit, Viroj
    • CELLMED
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    • v.2 no.2
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    • pp.13.1-13.3
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    • 2012
  • Blood borne infectious diseases are usually a public concern. The transmissions of many diseases are via blood borne mode. Several activities are related to this transmission such as injection, blood transfusion and transplantation. Also, the acupuncture practice can be a possible route for blood borne infectious disease transmission. In this specific review, the author briefly reviews acupuncture and blood borne viral infections.

Development of an intentional rounding protocol for nursing undergraduates to apply in clinical practice (간호대학생의 임상실습 적용을 위한 의도적 간호순회 프로토콜 개발)

  • Kim, Sueun;Ok, Jong Sun;Choi, Jin Yi;Choi, Heejung
    • The Journal of Korean Academic Society of Nursing Education
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    • v.29 no.4
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    • pp.381-394
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    • 2023
  • Purpose: This study aimed to develop an intentional rounding protocol to enhance the clinical competence of nursing students. Methods: An intentional rounding protocol for nursing students' clinical practice was developed following the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. A convenient sampling method was used to select 23 junior year university nursing students during their clinical practice in adult nursing. The program evaluation included a quantitative assessment (communication and relationship efficacy, empathy, and patient safety competency) and focus group interviews. Results: The intentional rounding protocol focused on the 4Ps (pain, position, potty, and possessions) and encompassed aspects such as level of consciousness, pain management, personal care needs, intravenous injection, oxygen administration, nasogastric/nasoenteric tube care, maintenance of urine collection bags, and the identification of environmental fall risks. Nursing students performed intentional rounding at least twice a day. Following the implementation of this protocol, nursing students demonstrated a significant improvement in communication and interpersonal efficacy. The focus group interviews revealed four main themes: growth of human relationships, acquiring knowledge in and about the clinical field, becoming a nurse, and barriers in reality. Conclusion: The intentional rounding protocol has the potential to enhance nursing students' communication and interpersonal skills during clinical practice and to provide them with positive experiences in nursing clinical education. Therefore, it is recommended that this protocol be incorporated into nursing clinical practice education.

Accuracy of the Glenohumeral Joint Injection According to the Approach (도달 방법에 따른 관절와상완 관절내 주사의 정확도)

  • Choi, Nam Yong;Lee, Kang Wook;Kim, Hyung Seok;Song, Hyun Seok
    • The Journal of Korean Orthopaedic Ultrasound Society
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    • v.6 no.2
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    • pp.45-52
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    • 2013
  • Purpose: We wanted to compare the accuracy between the blind anterior approach and ultrasound guided posterior approach, which are preferred in the present clinical practice for the glenohumeral joint injection. Materials and Methods: The consecutive 95 cases were included in that the glenohumeral joint injection was done in the university hospital and the medical record and ultrasonography were available. There were 52 cases which were injected by blind anterior approach (group I) and 43 cases who were injected by ultrasound guided posterior approach (group II). The injection was decided as accurate if the fluid was visualized in the posterior joint under the ultrasound. We evaluated the range of motion before and after 2 weeks of injection. A subjective satisfaction of the patients was interviewed at the 2 weeks after injection. Results: The accuracy of the glenohumeral joint injections of the group I and group II was 80.8% and 90.7%, respectively. The range of motion was improved for the all cases regardless of the approaches. At the 2 weeks after injection, the subjective satisfaction (better than good) was achieved in 73.7%. Conclusion: The accuracy of the blind anterior approach for the glenohumeral joint injection was 80.8%. The accuracy of the ultrasound guided posterior approach was 90.7%. In this comparative study by the one physician, the ultrasound guided posterior approach showed the better accuracy.

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Single-dose Intramuscular Injection Toxicology of Danggui Pharmacopuncture (DGP) in Sprague-Dawley Rats

  • Sun, SeungHo;Jeong, JongJin;Park, Sunju;Lee, KwangHo;Yu, JunSang;Seo, Hyung-Sik;Kwon, KiRok
    • Journal of Pharmacopuncture
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    • v.18 no.1
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    • pp.56-62
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    • 2015
  • Objectives: The purpose of the study is to assess both the approximate lethal dose and the single dose intramuscular injection toxicity of Danggui (Angelica gigantis radix) pharmacopuncture (DGP) in Sprague-Dawley (SD) rats. Methods: The experiments were conducted at the good laboratory practice (GLP) laboratory, Biotoxtech Co., which is a laboratory approved by the ministry of food and drug safety (MFDS). The study was performed according to the GLP regulation and the toxicity test guidelines of the MFDS (2009) after approval of the institutional animal care and use committee of Biotoxtech. Single doses of DGP were injected intramuscularly into the rats in three test groups of 6 week old SD rats (5 male and 5 female rats per groups) in the amounts of 0.1, 0.5, and 1.0 mL/animal for groups 2, 3, and 4, respectively, and normal saline solution in the amount of 1.0 mL/animal was injected intramuscularly into the rats (5 male and 5 female rats) in the control group. Observations of the general symptoms and weight measurements were performed during the 14 day observation period after the injection. Hematologic and serum biochemical examination, necropsy, and a local tolerance test at the injection site were done after the observation period. Results: No death was observed in three test groups (0.1, 0.5 and 1.0 mL/animal group). In addition, the injection of DGP had no effect on general symptoms, weights, hematologic and serum biochemical examination, and necropsy. The results from the local tolerance tests at injection site showed no treatment related effects in the SD rats. Conclusion: The results of single dose intramuscular injection of DGP suggest that the approximate lethal dose is above 1.0 mL/animal for both male and female SD rats and that intramuscular injection of DGP may be safe.

Intravenous Injection of Saeng Maek San - A Safe Method of Treatment in Rats

  • Choi, Min-Ji;Kim, Sung-Chul;Cho, Seung-Hun
    • Journal of Pharmacopuncture
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    • v.17 no.2
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    • pp.67-72
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    • 2014
  • Objectives: This study evaluated the single-dose toxicity of Saeng Maek San (SMS) in rats. Methods: All experiments were conducted at Biotoxtech (Chungwon, Korea), an institute authorized to perform non-clinical studies under the regulations of Good Laboratory Practice (GLP). A single-dose intravenous toxicity study was carried out on 40 6-week-old Sprague-Daley rats. The animals were randomly divided into the following four groups of ten animals each: Group 1 (G1) was the control group, with each animal receiving an intravenous injection of 1.0 mL of saline, and Groups 2, 3 and 4 (G2, G3 and G4) were the experimental groups, with the animals in the groups receiving an injection of 0.1, 0.5 and 1.0 mL of SMS, respectively. Mortality, clinical signs, body-weight changes and gross pathological findings were observed for 14 days following a single administration of SMS or saline. Organ weights, clinical chemistry and hematology were analyzed at 14 days. This study was conducted with the approval of the Institutional Animal Ethics Committee. Results: No deaths occurred in any of the four groups, indicating that the lethal dose of SMS in rats is greater than 1.0 mL/animal. Some changes in weights of male rats between the control group and the experimental groups were observed, but no significant changes in the weights of female rats were noted. To identify abnormalities in organs and tissues, we stained representative sections of each specified organ with hematoxylin and eosin for examination with a light microscope. No significant abnormalities were observed in any of the organs or tissues. Conclusion: The results suggest that intravenous injection of SMS is a safe method of treatment.

Studies on Local Irritation of DA-3585, A Recombinant Human Erythropoietin, in Rabbits (DA-3585(recombinant human erythropoietin)의 국소자극성에 관한 연구)

  • Cho, Hyeon;Kim, Dong-Hwan;Kang, Kyung-Koo;Park, Jang-Hyeon;Lee, Sung-Hee;Kim, Won-Bae
    • Toxicological Research
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    • v.14 no.3
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    • pp.393-400
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    • 1998
  • As a series of safety studies on DA-3585, a recombinant human erythropoietin, its local irritancy was examined in rabbits after the following treatments; application into the conjunctival sac of the eye(single), subcutaneous injection (single and -day repeated)and intravenous injection (7-day repeated.)In addition, perivascular irritation of DA-3585 was investigated in mice. In the result of ocular irritation test, 10,000IU/ml solution of DA-3585 could be considered as a non-irritating material. The local irritation of DA-3585 by a single and 7-day repeated subcutaneous injection was negligible and not so much different from that of saline. In the vascular irritancy test, macro-and microscopic observations revealed that local irritation of DA-3585 was comparable to that of saline when injected into retroauricular vein of rabbits for 7 consecutive days. Furthermore the perivascular administration of DA-3585 upto the concentration of 10,000 IU/ml did not induce any morphological abnormalities at injection sites. The results obtained from the present study suggest that the local irritancy of DA-3585 is not different from that of saline when injected through intravenous or subcutaneous route for clinical practice.

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