bluuebunny/crossref_metadata_2025_split huggingface dataset:
SO SÁNH MỘT SỐ TÁC DỤNG KHÔNG MONG MUỐN CỦA GÂY TÊ CƠ VUÔNG THẮT LƯNG VỚI GÂY TÊ MẶT PHẲNG CƠ NGANG BỤNG DƯỚI HƯỚNG DẪN SIÊU ÂM ĐỂ GIẢM ĐAU SAU MỔ CẮT TỬ CUNG HOÀN TOÀN ĐƯỜNG BỤNG
Authors: Đức Lam Nguyễn , Thị Phương Trần 
Published: June 2021

Mục tiêu: So sánh một số tác dụng không mong muốn của phương pháp gây tê cơ vuông thắt lưng (QL block) với gây tê mặt phẳng cơ ngang bụng (TAP block) dưới hướng dẫn siêu âm để giảm đau sau mổ cắt tử cung hoàn toàn đường bụng. Đối tượng, phương pháp nghiên cứu: 60 bệnh nhân được gây tê tuỷ sống để phẫu thuật cắt tử cung hoàn toàn đường bụng, sau mổ được phân bố ngẫu nhiên vào hai nhóm bằng nhau để giảm đau sau mổ bằng QL block hai bên hoặc TAP block hai bên dưới hướng dẫn của siêu âm, sử dụng ropivacain 0,25% liều 0,3ml/kg ở mỗi bên. Theo dõi liên tục các tác dụng không mong muốn của hai phương pháp này trong 24 giờ đầu sau mổ. Kết quả: Tỷ lệ nôn, buồn nôn ở nhóm QL block là 3,33% so với nhóm TAP block là 6,67%, tỷ lệ ngứa ở hai nhóm là 3,33%. Không gặp trường hợp nào bị tụ máu thành bụng, nhiễm khuẩn vị trí gây tê, tổn thương cơ quan trong ổ bụng hay ngộ độc thuốc tê ở cả hai nhóm nghiên cứu. Kết luận: Tác dụng không mong muốn của gây tê cơ vuông thắt lưng tương đương với gây tê mặt phẳng cơ ngang bụng dưới hướng dẫn của siêu âm để giảm đau sau mổ cắt tử cung hoàn toàn đường bụng. Không gặp các tai biến nặng nề của cả hai phương pháp này.
NGHIÊN CỨU CÁC DIỄN BIẾN BẤT LỢI Ở BỆNH NHÂN TẮC ĐỘNG MẠCH NÃO ĐƯỢC LẤY HUYẾT KHỐI CƠ HỌC CÓ ĐIỀU TRỊ BẮC CẦU
Authors: Anh Tuấn Trần 
Published: June 2021

Mục tiêu nghiên cứu: Nghiên cứu các biến chứng do tái thông mạch mạch máu não bằng tiêu sợi huyết kết hợp lấy huyết khối cơ học. Đối tượng và phương pháp nghiên cứu: Các bệnh nhân đột quỵ nhồi máu não mạch lớn trước 270 phút, có chỉ định đồng thời tiêu sợi huyết liều 0.9mg/kg và lấy huyết khối cơ học. Đánh giá các diễn biến bất lợi, đặc biệt chảy máu não sau tái tưới máu. Kết quả: Với 35 bệnh nhân thu được, tỷ lệ tái thông mạch tốt (TICI 2b-c) là 94%, hồi phục tốt thời điểm 90 ngày là 62,9% (mRS 0-2). Tỷ lệ xuất huyết chuyển dạng là 37,1% trong đó chủ yếu là xuất huyết chuyển dạng không triệu chứng 10/13 bệnh nhân xuất huyết (76,9%). Ngoài ra có thể gặp một số diễn biến bất lợi khác như viêm phổi (5,8%), suy thận (5,85), suy giảm thần kinh sớm (8,6%). Kết luận: Xuất huyết chuyển dạng là biến chứng hay gặp sau điều trị tiêu sợi huyết kết hợp lấy huyết khối động mạch (37,1%) nhưng kỹ thuật này vẫn là phương pháp hiệu quả trong điều trị đột quỵ não tắc mạch lớn.
ĐIỀU TRỊ GÃY KÍN MÂM CHÀY SCHATZKER V-VI BẰNG NẸP KHOÁ MÂM CHÀY NGOÀI VÀ SAU TRONG QUA HAI ĐƯỜNG MỔ TẠI BỆNH VIỆN THỐNG NHẤT
Authors: Bảo Lục Nguyễn , Thành Toàn Võ 
Published: June 2021

Mục tiêu: Đánh giá điều trị gãy kín mâm chày Schatzker V VI bằng nẹp vít khoá mâm chày ngoài và sau trong qua hai đường mổ tại khoa Chấn thương Chỉnh hình, Bệnh viện Thống Nhất. Phương pháp nghiên cứu: Nghiên cứu hồi cứu và tiến cứu mô tả trên 18 bệnh nhân có gãy kín mâm chày Schatzker V, VI được phẫu thuật kết hợp xương bằng nẹp vít khóa tại Bệnh viện Thống Nhất từ 01/2018 đến 01/2021. Tất cả bệnh nhân được hẹn tái khám lâm sàng và kiểm tra phim X – quang sau mổ. Kết quả: Gãy kín mâm chày loại V (14 ca) và loại VI (4 ca) theo Schatzker với tỷ lệ nam/nữ là 1,25. Trong đó từ 16 đến 45 tuổi chiếm 83.3%. Nhóm nghề nghiệp thường gặp tai nạn chủ yếu là lái xe máy, các nghề tự do và công nhân với tỷ lệ 83.3% và nguyên nhân chấn thương 61.1% là do tai nạn giao thông, 27.8% tai nạn lao động. Sau mổ 100% lành xương với kết quả 88.9% tốt và rất tốt. Phục hồi giải phẫu cải thiện cấu trúc từ đó phục hồi chức năng mang lại kết quả cao hơn với 66.7% đạt tốt và rất tốt. Kết luận: Kết hợp xương gãy kín mâm chày loại V – VI theo Schatzker bằng hai nẹp vít khoá qua hai đường mổ mang lại kết quả phục hồi tốt và rất tốt trong giải phẫu và chức năng.
Roles of Internal Locus of Control and Grit in Managing the Academic Stress of Senior High School Students in Southern Luzon State University
Authors: Quing Karen Anne , Baudin Jomar Saif 
Published: June 2021

Any individual who transitions through different stages of life inevitably experience stress, especially adolescents who undergo physiological and psychological changes. This is the stage where they have to make relevant decisions including the academic courses they have to take for their future career. The overwhelming expectations that they are experiencing from their family, teachers and society to excel academically have been shown to cause distress among adolescents. It is, therefore, becomes imperative to study possible protective factors to formulate efficient intervention techniques. Two of the most studied constructs that have been linked to academic success are internal locus of control and grit. However, limited research has been conducted to investigate these two constructs with academic stress, especially among Filipino adolescents. The current study explored the roles of internal locus of control and grit in managing academic stress. A sample of 165 senior high school students from Southern Luzon State University-Main Campus was involved in this study. Results showed that both grit and internal locus of control are negatively correlated with academic stress. It was also shown that grit is positively associated with an internal locus of control although one is not a predictor of another.
¿Cómo elaboramos CJP?
Authors: Tórrez Mario Isaías 
Published: June 2021

Recién se publica el número correspondiente, se abre el periodo para recibir trabajos o colaboraciones del colectivo académico del Instituto Centroamericano de Estudios Jurídicos y Políticos, ICEJP-UPOLI o de nuestros colaboradores y colaboradoras nacionales e internacionales de la academia o de la sociedad civil organizada.
Problemas de terminología en estudios realizados acerca de "lo que el alumno sabe" sobre ciencias
Authors: Jiménez Gómez Emma , Solano Martínez Isabel , Marín Martínez Nicolás 
Published: June 2021

In this paper we have carried out a bibliographic review of the terms currer tly used by science education researchers to describe «pupils' knowledge» of Science. Further, we have analised their meanings from the perspective of the methodological framework used and have offered our own proposal, as a result of that review, so as to reach a consensus on both the terminology and the possible range of meanings to be used. It must be pointed out that we have excluded those studies which discuss «pupils' knowledge» from a purely psychological perspective because of the enormous amount of bibliography on this topic.
Historia, filosofía y enseñanza de las ciencias: la aproximación actual
Authors: Matthews M. R. 
Published: June 2021

This paper traces the use of, and arguments for, the history and philosophy of science in school science courses. Specific attention is paid to the British National Curriculum proposals and .:o the recommendations of the US Project 2061 curriculum guidelines. Some objections to the inclusion of historical material in science courses are outlined and answered. Mention is made of the Piagetian thesis that individual psychoIog: cal development mirrors the development of concepts in the history of science. This introduces the topic of idealisation in science. Some significant instances are itemised where science education has, at its considerable cost, ignored work in philosophy of science. Arguments for the inclusion of the history and philosophy of science in science teacher education programmes are given. The paper finishes with a list of topical issues in present science education where collaboration between science teachers, historians, philosophers, and sociologists would be of considerable benefit.
El paradigma de las concepciones alternativas y la formación de los profesores de ciencias
Authors: Vázquez Alonso Ángel 
Published: June 2021

The pre -service education of science teachers is empirically studied in the framework provided by the paradigm of alternative conceptions by means of 13 simple usual Physics questions. The rates of pre -service teachers' alternative conceptions show a strong resemblance with those found in previous research even with students. Differences between sex and age groups are remarkable, but the major finding is that only physicists show a suitable pattern lacking alternative conceptions about Physics topics, while other science careers not only have a lot of alternative conceptions but also science and non -science teachers show similar patterns. We claim a pre -service teacher education more based on conceptual change aimed to avoid teachers' alternative conceptions in basic science contents of different areas.
Técnicas de creación y manipulación de imágenes de estructuras orgánicas tridimensionales. Nuevos entornos de aplicación didáctica
Authors: Juanes J. A. , Zoreda J. L. , Vacas Peña José Manuel , Riesco J. M. , Vázquez R. 
Published: June 2021

The development of computer -generated images opens new perspectives in the field of teaching. These techniques permit geometric modelling of three-dimensional structures, allowing the production and manipulation of real images and the numerical and graphic characterization of two -three-dimensional contours. The procedure proposed is based on the manipulation, by geometric (turns, traslations) and algebraic (addition, intersection) operations, of an initially finite set of surfaces (elipsoids, paraboloids, cylinders and planes), defined by their parameters, for teaching purposes.
Diseño de unidades didácticas en el área de Ciencias Experimentales
Authors: Sánchez Blanco Gaspar , Valcárcel Pérez María Victoria 
Published: June 2021

This study puts forward some planning strategies for the teaching of Science based on a constructivist approach for the teaching/learning process. These strategies are shown in a model for the design of teaching units which includes five interdependent tasks: scientific analysis, pedagogical analysis, selection of objectives, selection of pedagogical strategies and selection of evaluation strategies. The first two aim at the reflection and estimation of contents and constrains of the teaching/learning processes. The other three are concerned with teachers' decision making and the explicitness of their teaching plans, as well as with their classroom performance in order to achieve them.
El papel del péndulo en la construcción del paradigma newtoniano
Authors: Solaz Portolés Joan Josep , Sanjosé López V. 
Published: June 2021

This paper shows the important role of one of the most common instruments, the pendulum, in the construction of the newtonian paradigm. From the analysis of some interesting applications carried out by the greatest scientists of that time, we conclude that the appropriate use of the pendulum in the classroom can be an easy way to introduce historical and epistemological evolution of basic physical concepts.
Estrutura interna de testes de cohecimento em Física: um exemplo em mecânica
Authors: Lang da Silveira F. , Moreira Marco Antonio 
Published: June 2021

Research findings are presented concerning the internal structure analysis of a multiple choice test constructed to detect whether or not the student has the Newtonian conception of the interrelationship between force and motion. These findings show that the test has two different but related factors: one subset of items checks students' ability to identify forces in certain physical situations according to the Newtonian view while another subset checks whether or not they relate the resultant force with acceleration. In addition, the analysis also shows that the two subsets have slightly different predicting power concerning student performance in mechanics. This kind of analysis might be very relevant for teacher's work regarding learning evaluation.
Estrategias y argumentos en el estudio descriptivo de la asociación usando microordenadores
Authors: Batanero Bernabeu Carmen , Estepa Castro José Antonio , Díaz Godino J. 
Published: June 2021

In this work, problem solving procedures about statistical variables association using microcomputers are analysed. The effect of several didactical variables on these procedures is also studied. The studied population consisted of 18 prospective teachers who had been previously trained for 7 weeks. By studying the students' replies we determined their ideas of the scope and meaning of the term «association» and derived criteria for construction of new didactic situations.
Ayudar a los alumnos a aprender cómo aprender. La opinión de un profesor-investigador.
Authors: Novak J. D. 
Published: June 2021

Four basic questions are approached in this paper: I. What we know about how people learn. 2. How we can help students learn to learn. 3. What the obstacles are to helping students learn. 4. What the expectations are for the empowerment of people. The answers, based on the author's experience and on research done at Cornell University refer widely to significant learning, to heuristic learning and to the conceptual maps.
Un ejemplo de aportación de la didáctica de la física a la enseñanza: los ejercicios cualitativos y los razonamientos funcionales
Authors: Saltiel E. 
Published: June 2021

Didactic specialists use exercises as a resource for research, whereas for teachers they are resources for teaching and evaluating. In most cases the evaluative exercises are of a quantitave type and the didactic value of the exercises of a qualitative type is not clearly shown. Starting from the analysis of the answers to exercises on the same subject but of different types, the author shows how important qualitative exercises are and how they can he used as resources for teaching and evaluating.
El conocimiento acerca de las matemáticas y las prácticas de enseñanza
Authors: Sánchez García Mª V. , Llinares Ciscar Salvador 
Published: June 2021

The individual and contextual influences that two periods of school experience have over the way in which two prospective teachers build their personal view of Mathematics and its teaching are studied. In particular, the important role played by the perceived knowledge of the subject matter knowledge is shown. Also, the strategies used in trying to give coherence and meaning to the experimented changes are discussed.
Ideas de los alumnos acerca del mol. Estudio curricular
Authors: García Martín J. P. , Pizarro Galán A. Mª , Perera Cendal F. , Martín Díaz M. J. , Bacas Leal P. 
Published: June 2021

In this paper a display is made of the controversy about the concept of mol and the convenience of introducing it in the school "curricula" at the age in which nowadays is made. The results we have obtained from the research carried out on the difficulties experienced by 15 to 19 year old students in understanding this concept and other related concepts are given.
Análisis de la resolución de problemas como estrategia de enseñanza de la biología
Authors: Sigüenza Molina Agustín Francisco , Sáez Mª J. 
Published: June 2021

Solving -problems as a biology teaching strategy could make the process of comprehension easier and lead to the student's acquisition of knowledge. This paper analyses problem -solving as a basic element of the above strategy (method). For this reason it first proposes the definition of the terms «problem» and «problem -solving» inside practical teaching and secondly discusses the nature of solving as a method within the particular case of biology teaching learning.
Importancia de la química descriptiva en la enseñanza de la química. Propuesta de un modelo para su aprendizaje.
Authors: Quílez Pardo J. , Llopis R. 
Published: June 2021

This paper tries to establish a methodology for teaching Descriptive Chemistry by applying basic principles and the social dimension of Chemistry in a stimulating way. The selection of ammonia for this purpose is based on these assumptions.
El concepto de geosinclinal tras la revolución movilista: otro desajuste entre la ciencia actual y la ciencia en el aula
Authors: Anguita Francisco 
Published: June 2021

A revision of Geology and Physical Science textbooks widely used at high-school level shows that the geosyncline idea (in itself or as a part of plate tectonics theory) is frequently presented as a tenable hypothesis on mountain origins. As this is not a scientifically acceptable position any more, a great deal of confusion is probably being created among both students and teachers without very solid geologic foundations.
Plus ça change" : los efectos de la región, número de asignaturas de ciencias cursadas y sexo sobre la opinión de los estudiantes canadienses en cuestiones de Ciencia, Técnica y Sociedad
Authors: Ryan Alan G. 
Published: June 2021

An analysis of Canadian high school students' views on science -technology -society issues was undertaken in order to see if educationally significant differences in response were attributable to changes in three variables. The variables were: the region in which the students lived, the number of science courses being taken by the responding students, and the sex of the responder. On the whole, few variations among students' responses were found. The variations reported in the paper included the findings that Maritimer students tend to have a more idealistic view of how scientists conduct their work, that students who are taking three science courses have a greater understanding of the role of models in science, and that males, apart from a small group of male chauvinists, offer the same reasons as females to explain why there are fewer Canadian female scientists than males.
Ideas de los alumnos sobre la digestión : aspectos fisiológicos
Authors: Banet Hernández Enrique , Núñez Francisco 
Published: June 2021

In this article we report the ideas owned by students from different levels (EGB, BUP, Teacher Training College) as well as by some teachers, in relation to certain concepts involved in the processes of digestion and substance absorption. The dificulties observed in the conceptualization of several processes, especially in lower lever students, show the need for a change in the teaching planning.
¿Ingresan los alumnos a la Universidad con un adecuado desarrollo de los niveles de razonamiento?
Authors: Braga I. L. 
Published: June 2021

Most of the students that enrol in the area of physical sciences and mathematics, in the Universities in Chile fail in the first courses of physics and mathematics. To try to solve this problem a course on intellectual development was devised; the contents and outcome of this course are presented.
Representaciones de los alumnos en Biología: estado de la cuestión y problemas para su investigación en el aula
Authors: Serrano T. 
Published: June 2021

Within the current perspective of the students' alternative frameworks research, the number of physic concepts investigated is far superior and better known than the biological ones; thus, a general aim of this paper is to outline some of the work done in the latter area. There are two sections in this paper. The first presents a main selection of the research done into biological topics with a more detailed analysis of the studies related to students' conceptions of heredity. A central feature of this analysis is to point out the underlining learning theories held by researchers and their selection of research designs and techniques accordingly. The significance of these studies for teachers are sketched. The second section outlines: first, some difficulties regarding the process and interpretation of the research results, and second, the scarcity of class intervention studies.
¿Qué se pretende en los laboratorios de física universitaria?
Authors: Sebastià José M. 
Published: June 2021

The purpose of this article is to show the results of an analysis done, from a student's and teacher's point of view, on the objetives of the physics laboratory at the university. From a sample of 128 students and another one consisting of 20 teachers, 20 possible objectives of physics laboratory were classified according to the importance that both students and teachers thought should be given to each of the suggested objectives, and on the importance which is being given to them at the moment. A contrastive study was also done of the results obtained from both samples, showing a high correlation in the ideal objectives of the laboratory and a consistent diagnosis in reference to the working situation at the moment.
Método activo en química de COU
Authors: Seminario Permanente de Física y Química Equip 
Published: June 2021

In this paper we analize the results of several pupils' classes of C.O.U. in Chemistry that have followed an experimental methodology, comparing them with those achieved by one class that has followed a traditional teaching method. As for «the Test to enter the University)) we have also made a comparison between the results obtained by our experimental classes and the rest of the pupils that have not followed this experimental method.
¿Qué aprendemos de las semejanzas entre las ideas históricas y el razonamiento espontáneo de los estudiantes?
Authors: Saltiel E. , Viennot L. 
Published: June 2021

Many studies are now available concerning the intuitive ideas of children and students in Science, and a large number of these also refer to difficulties encountered in the historical development of theories. This is especially the case in mechanics, which gave rise to parallels between students' misconceptions and Aristotle's or preclassical theories. It is very common to qualify, even with no special justification, such and such intuitive response «Aristotelian». The questions discussed in this paper are the following: —to what extent are such parallels justified? Fot instance, is there a stage in the historical development of mechanics theories which fits the spontaneous reasoning of our students?—At a second level, what are the implications of such a parallel and what do we learn from this? Does it really help us interpret students' responses and to what extent does it guide our teaching strategies?
Conocimientos de Biología al terminar el curso de orientación universitaria
Authors: García Barquero P. , Nieda Juana , Aguirre de Carcer I. 
Published: June 2021

The levels of performance in a twofold Criterion Referenced Test covering different objectives of 12th grade biology contents is used to evaluate that curriculum. The test was taken by two samples of first year college students. Two analyses of variance were conducted: one between levels of performance on the test (number of criteria passed) and grades on the Spanish Biology Entrance examination test; the other between performance on the test and grades in first year General Biology, to explore both causes and consequences of entering university studies with those levels of performance.
Carácter general de la ley de Ahrrenius
Authors: Merino de la Fuente J. , Diego Beade A. M. de 
Published: June 2021

In this paper we emphasize the general character of the Arrhenius Law showing its resemblance with the evaporation of liquids and the thermoionic effect laws and, generally, to the whole phenomena such as to perform the statistic thermodynamics laws.