An Enhanced Microfine Cement Design for Special Squeeze Applications

2021 ◽  
Author(s):  
Mohammad Khaja ◽  
Sushil Raturi ◽  
Abhijit Dutta ◽  
Hassan Haddad ◽  
Rajeev Singh ◽  
...  
Keyword(s):  
Negative Pressure ◽  
Field Trials ◽  
Cement Particle ◽  
Cement Slurry ◽  
Initial Field ◽  
Water Influx ◽  
Pressure Tests ◽  
Minimum Number ◽  
Microfine Cement ◽  
The State Of Kuwait

Abstract A new and enhanced microfine cement system is presented in this paper which can be used in challenging cement squeeze applications. There are numerous cement squeeze jobs conducted during workover operations every year within the State of Kuwait to prevent water influx. A very common challenge encountered during these applications is either low or no injectivity scenarios. Conventional cement slurries at 15.8-lb/gal density have more often than not resulted in failures while performing post job positive and negative pressure tests, even when the pressure tests are repeated multiple times. These failures can often be attributed to the fact that effective squeezing is not possible due to the larger cement particle size across a limited number of perforations due to early bridging of the cement. Similarly, conventional microfine cement systems which have also been used in these applications have had only limited success. To overcome these challenges, an improved and enhanced microfine cement design has been developed which is able to obtain higher compressive strengths at lower slurry densities (e.g. 12.5 to 13.0 lb/gal) versus the 15.8-lb/gal conventional slurries. This microfine cement design can be further modified to be used in high, low, and zero injectivity scenarios. It possesses several unique features including thixotropic, expansion, anti-gas migration, and strength retrogression properties. Initial field trials of the system have been very successful. The application of conventional microfine slurry systems in low injectivity scenarios is relatively common in the industry; however the enhanced microfine slurry design can be utilized in a variety of injectivity scenarios, or even in loss situations across perforations, casing leaks, or across the casing shoe. The new microfine cement slurry design has the potential of avoiding multiple squeeze jobs by achieving successful positive and negative pressure test results in a minimum number of attempts.

PENGEMBANGAN BAHAN AJAR BERBASIS PENDEKATAN OPEN ENDED PADA MATERI FPB/KPK KELAS IV UNTUK MENINGKATKAN KEMAMPUAN PENALARAN SISWA DI SD NEGERI TAMBAKREJO 01 SEMARANG

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Ambar Widianingrum ◽  
Joko Sulianto ◽  
Rahmat Rais
Keyword(s):  
Data Analysis ◽  
Research And Development ◽  
Teaching And Learning ◽  
Analysis Data ◽  
Field Trials ◽  
Teaching Materials ◽  
Initial Field ◽  
Analysis Technique ◽  
Quantitative Descriptive ◽  
Stage 1

The purpose of this study was to describe the feasibility of teaching materials based on an open-ended approach to improve the reasoning abilities of fourth grade students in elementary schools. This type of research is research and development (Research and Development). The subjects of this study were 3 classroom teachers. The data analysis technique used is descriptive qualitative data analysis (data reduction, data presentation and conclusion) and quantitative descriptive data analysis. Based on the results of stage 1 media validation, it was obtained 84.8%, and the results of stage 2 media validation were obtained 94.8%. The result of material validation for stage 1 was obtained 84.6%, and validation for material for stage 2 was obtained 93.3%. The results of initial field trials obtained media 93.7% and material 92.3%. This shows that the teaching material is declared valid and suitable for use. Based on the results of this study, the suggestion that can be conveyed is that teaching materials based on an open-ended approach can be used as a tool for teaching and learning resources for students.

scholarly journals Pengembangan Bahan Ajar Tematik Berbasis Nilai-Nilai Keislaman Kelas VI Madrasah Ibtidaiyah

2021 ◽  
Vol 2 (1) ◽  
pp. 1-24
Author(s):  
Sumining Sumining
Keyword(s):  
Research And Development ◽  
Core Competencies ◽  
Field Tests ◽  
Field Trials ◽  
Teaching Materials ◽  
Initial Field ◽  
Post Test ◽  
Leadership Class ◽  
Thematic Learning ◽  
Islamic Values

Development of thematic teaching materials based on Islamic values, especially those related to the contents of the verses of the Alqur'an and / or hadith as the basis of all science. In the available books, there are no thematic teaching materials that are integrated with the Al-Quran and Hadith, as well as Islamic values ??that are able to implement the core competencies of the 2013 curriculum, namely the competence of spiritual attitudes in thematic learning. The formulation of this research is: (1) producing thematic teaching materials based on Islamic values ??theme 7 (Leadership) class 6 Madrasah Ibtidaiyah Negeri 2 Jember. (2) to determine the effectiveness of thematic teaching materials based on Islamic values ??in learning. This study uses a research and development research type, the Borg and Gall model which is divided into 10 steps, namely: (1) research and data collection (2) planning, (3) product draft development, (4) initial field trials, ( 5) revising the results of trials, (6) field trials, (7) improving products from field tests, (8) conducting field trials, (9) improving product results, and (10) disseminating and implementing. The testing technique was carried out by comparing the pre-test and post-test values. The data was calculated using the t-test and processed using the SPSS application to determine the effectiveness of teaching materials. The results of this study indicate: the validation test produces an average of 88.79% with the criteria that the book is very suitable for use in learning. In terms of attractiveness, this book is very interesting to use for students, this is based on the results of the questionnaire data given to students with an average of 88.24% with very attractive qualifications. Meanwhile, from the results of the pre-test and post-test based on the t count which shows that it is greater than the t table, it means that the book is effective for use in learning. Keywords: Teaching Materials; Thematic Learning; Islamic Value Pengembangan bahan ajar tematik berbasis nilai keislaman, terutama yang terkait dengan isi ayat Alqur'an dan/atau hadits sebagai dasar dari semua sains. Dalam buku yang telah tersedia tidak ada bahan ajar tematik yang terintegrasi dengan Al-Quran, dan Hadits, serta nilai-nilai Islam yang mampu mengimplementasikan kompetensi inti dari kurikulum 2013 yaitu kompetensi sikap spiritual dalam pembelajaran tematik. Perumusan penelitian ini yaitu: (1) menghasilkan bahan ajar tematik berbasis nilai keislaman tema 7 (Kepemimpinan) kelas 6 Madrasah Ibtidaiyah Negeri 2 Jember. (2) mengetahui efektifitas bahan ajar tematik berbasis nilai-nilai keislaman dalam pembelajaran. Penelitian ini menggunakan jenis penelitian pengembangan Research and Development, model Borg and Gall yang terbagi menjadi 10 langkah, yaitu: (1) penelitian dan pengumpulan data (2) perencanaan, (3) pengembangan draf produk, (4) uji coba lapangan awal, (5) merevisi hasil uji coba, (6) uji coba lapangan, (7) penyempurnaan produk hasil uji lapangan, (8) uji pelaksanaan lapangan, (9) penyempurnaan produk hasil, dan (10) diseminasi dan implementasi. Teknik uji coba dilakukan dengan membandingkan nilai pre-test dan post-test. Data dihitung dengan uji-t dan diolah menggunakan aplikasi SPSS untuk mengetahui efektifitas bahan ajar. Hasil penelitian ini menunjukkan: uji validasi tersebut rata-rata menghasilkan 88,79 % dengan kriteria bahwa buku tersebut sangat layak untuk digunakan dalam pembelajaran. Dari segi kemenarikan, buku ini sangat menarik untuk digunakan pada siswa, hal ini berdasarkan dari hasil data angket yang diberikan kepada siswa dengan rata-rata 88,24% dengan kualifikasi sangat menarik. Sedangkan dari hasil pre-test dan pos-test berdasarkan uji t hitung yang menunjukan lebih besar dari t tabel, berarti buku tersebut efektif untuk digunakan dalam pembelajaran. Kata Kunci: Bahan Ajar; Pembelajaran Tematik; Nilai Keislaman

scholarly journals Pengembangan Media Booklet Berbasis Potensi Lokal Kalimantan Barat Pada Materi Keanekaragaman Hayati Pada Siswa Kelas X di SMA Muhammadiyah 1 Pontianak

2019 ◽  
Vol 3 (1) ◽  
pp. 44-52
Author(s):  
Eti Setyaningsih ◽  
Ari Sunandar ◽  
Anandita Eka Setiadi
Keyword(s):  
Core Competencies ◽  
Phase 1 ◽  
Model Development ◽  
Field Trials ◽  
Local Potential ◽  
Limited Information ◽  
Initial Product ◽  
Initial Field ◽  
Student Responses ◽  
Basic Competencies

ABSTRACT. Based on the results of interviews with biology teachers of SMA Muhammadiyah 1 Pontianak, that not implemented yet local potential based learning is because of limited information. This research aims to develop local potential of West Kalimantan based booklet media on biodiversity material in Grade X of SMA Muhammadiyah 1 Pontianak.. Media development of this booklet used the Brog&Gall model development method, with stages:(1) Research and data collection,(2) planning,(3) Initial product development,(4) Initial field trials,(5) initial product repairs, and (6) field trials. The results research phase (1) that the book and worksheets teacher have not shown local potential, stage (2) the designed booklet contains core competencies, basic competencies, indicators, objectives, contents, evaluations, and bibliography, stage (3) shows the validity booklets on language aspects 85.3% (very valid), material aspects 95.3% (very valid) and media aspects 90.6% (very valid), stage (4) student responses was 85,7% (very positive) and the teacher's response was 88.7% (very positive). Then stage (5) and stage (6), student responses 90.0% (very positive) and teachers 90.4% (very positive), it concluded that developed booklet media valid and received very positive response from students and teachers.

PENGEMBANGAN BUKU AJAR DAN KURIKULUM MUATAN LOKAL BAHASA KUTAI BAGI SISWA SEKOLAH DASAR DI KEC. TENGGARONG

2021 ◽  
Vol 12 (1) ◽  
pp. 94-103
Author(s):  
Muhammad Zainuddin ◽  
Silvana Kardinar Wijayanti
Keyword(s):  
Elementary Schools ◽  
Data Collection ◽  
Research And Development ◽  
Mother Tongue ◽  
Field Trials ◽  
Dissemination And Implementation ◽  
Initial Field ◽  
Local Content ◽  
Dissemination And Implementation Research ◽  
Product Improvement

ABSTRAKBanyak bahasa di Dunia sudah mengalami kepunahan, kepunahan dalam bahasa khususnya bahasa ibu menjadi aspek fokus dalam pengajaran bahasa sebagai muatan lokal di sekolah. Upaya pemertahanan ini diwujudkan dalam pengembangan kurikulum dan buku ajar. Oleh karena itu, penelitian ini bertujuan untuk mengembangkan kurikulum dan buku ajar muatan lokal Bahasa Kutai di Sekolah dasar di Kec. Tenggarong Penelitian ini termasuk dalam jenis penelitian, penelitian dan pengembangan (research and development). Pengumpulan data dilakukan dengan menggunakan metode angket, observasi, interview.adapun langkah penelitian sebagai berikut penelitian dan pengumpulan data kuisioner pada sekolah dasar di Kecamatan Tenggarong, perencanaan pembuatan buku, pengembangan draf produk buku ajar, uji coba lapangan awal pada sekolah dasar, revisi hasil, uji coba lapangan, penyempurnaan produk hasil, uji pelaksanaan lapangan, penyempurnaan produk akhir, diseminasi dan impelementasi, hasil penelitian menunjukkan bahwa Buku ajar sudah layak digunakan dengan prosentasi validasi 80%  dan 79%, tampilan fisik buku  78%( baik), Materi 79% (baik) dan Penggunaan Bahasa 79% (baik), secara keseluruhan rata-rata keterbacaan peserta didik adalah 78.67% (baik).Kata Kunci: Pengembangan kurikulum, buku ajar, Bahasa Kutai ABSTRACTThere are many languages in the world have experienced extinction, extinction in languages, especially mother tongue, has become a focus aspect in language teaching as a local content in schools. This defense effort is manifested in the development of curricula and textbooks. Therefore, this study aims to develop curricula and textbooks for local content in the Kutai language in elementary schools in the district. Tenggarong This research is included in the type of research, research and development (research and development). Data collection was carried out using the questionnaire method, observation, interview. The research steps were as follows: research and data collection of questionnaires in elementary schools in Tenggarong District, planning for making books, developing draft textbook products, initial field trials in elementary schools, revising results, field trials, product improvement results, field implementation tests, final product improvement, dissemination and implementation, research results show that textbooks are suitable for use with validation percentages of 80% and 79%, physical appearance of books is 78% (good), material 79% (good) and Language Usage 79% (good), the overall average readability of students was 78.67% (good).Keywords : Curriculum development, teaching textbook, Kutai language

The Optiscope Enlarger: A Report of Initial Field Trials

1972 ◽  
Vol 66 (9) ◽  
pp. 320-322
Author(s):  
George O. Hellinger ◽  
Arthur W. Berger
Keyword(s):  
Word Reading ◽  
Low Vision ◽  
Reading Difficulties ◽  
Field Trials ◽  
Initial Field ◽  
Low Vision Aids ◽  
Home Reading ◽  
Room Illumination ◽  
Do So ◽  
At Home

□ 1. Thirty consecutively selected low vision patients were evaluated on their performance in viewing a standard near-point chart and selected materials. This was done unaided and then with their customary low-vision aid, first hand-held and then viewed in the Optiscope Enlarger. 2. All subjects demonstrated an ability to read smaller point chart type and to do so at a greater distance with the Optiscope Enlarger. Varied responses on the selected materials might be attributable to word reading difficulties or the effect of the causative defect. 3. Some subjects did better without their low-vision aids or went to distance prescription lenses while using the Optiscope Enlarger. Use of this type of device indicates the necessity for testing for greater distance than normally associated with low-vision aids. 4. Responses of the subjects were 18 favorable, five questionable, and seven negative. It was found that room illumination had to be varied in certain cases. 5. Use of this device would permit simultaneous viewing by parent and child at home, reading at more normal distances, greater word and phrase span, and the viewing of technical diagrams. 6. The results of this evaluation indicate that the Optiscope Enlarger is of substantial value and warrants further investigation.

Negative pressure effects on mechanically opposing pharyngeal muscles in awake and sleeping goats

2001 ◽  
Vol 91 (5) ◽  
pp. 2289-2297 ◽  
Author(s):  
Thom R. Feroah ◽  
H. V. Forster ◽  
L. Pan ◽  
N. E. Schlick ◽  
Paul Martino ◽  
...  
Keyword(s):  
Rem Sleep ◽  
Negative Pressure ◽  
Slow Wave Sleep ◽  
Pressure Response ◽  
Pressure Effects ◽  
Upper Airways ◽  
Tp 31 ◽  
State Dependent ◽  
Pharyngeal Muscles ◽  
Pressure Tests

Our aim was to investigate the effects of the negative pressure reflex on mechanically opposing pharyngeal muscles during wakefulness, slow-wave sleep (SWS), and rapid eye movement (REM) sleep. In four goats with isolated upper airways, we measured tracheal airflow and electrical activity of the thyropharyngeus (TP; constricting), the stylopharyngeus (SP; dilating), and the diaphragm (Dia). In the wakefulness state in response to negative pressure tests, TP decreased (65%), SP increased (198%), and tidal volume (Vt) (66%) and rate of rise of Dia (Diaslope, 69%) decreased ( P < 0.02). Similarly, during SWS, the negative pressure response of TP (31%), Vt (61%), and Diaslope (60%) decreased, whereas SP (113%) increased, relative to SWS control ( P < 0.02). In REM sleep, the negative pressure response by TP and SP were small, whereas both Vt (38%) and Diaslope (24%) were greatly decreased ( P < 0.02) compared with REM control. Inspiratory duration remained unchanged in response to negative pressure tests in all states. These data provide evidence that mechanically opposing inspiratory and expiratory pharyngeal muscles are reciprocally controlled and their response to negative pressure are state dependent.

scholarly journals Evidence for a Vessel Wall Defect in Immuno-thrombocytopenic Hamsters

Blood ◽  
1960 ◽  
Vol 15 (5) ◽  
pp. 675-680 ◽  
Author(s):  
RAJENDRA G. DESAI ◽  
GEORGE P. FULTON
Keyword(s):  
Bone Marrow ◽  
Platelet Count ◽  
Negative Pressure ◽  
Peripheral Blood ◽  
Vessel Wall ◽  
Bleeding Time ◽  
Red Cell ◽  
Clot Retraction ◽  
Wall Defect ◽  
Pressure Tests

Abstract Experimental purpura was produced in the hamster by administration of anti-platelet serum obtained from rabbits previously injected with hamster platelets. Spontaneous petechiae and generalized bleeding were observed. The derangement in the hemostatic mechanism has been analyzed by study of the changes in blood, bone marrow and vessel walls. The platelet count in peripheral blood fell from 9.02 ± 0.85 (x 105) to 0.66 ± 0.32 (x 105) at 24 hours after 2.0 ml. intravenous injection of antiplatelet serum. The red cell and hemoglobin values dropped to 50 per cent before death related to generalized bleeding occurred. Significant changes were seen in the megakaryocytes of the bone marrow. The bleeding time and clot retraction were extended. Evidence for a defect in the vessel wall has been shown by the microelectrode, moccasin snake venom and negative pressure tests. The cause of bleeding has been postulated as a double defect resulting from a decrease of platelets in the circulation and an alteration in the integrity of the vessel wall or perivascular supporting sheath.

scholarly journals PENGEMBANGAN BAHANAJAR BAHASA INDONESIA BERBASIS BUDAYA LOKAL BALIDI KELAS VII SMP PGRI 3 DENPASAR

2017 ◽  
Vol 7 (2) ◽  
pp. 227-238
Author(s):  
I Nyoman Adi Susrawan ◽  
Dewa Gede Bambang Erawan
Keyword(s):  
Language Learning ◽  
Descriptive Analysis ◽  
Field Trials ◽  
Average Score ◽  
Teaching Materials ◽  
Learning Materials ◽  
Initial Field ◽  
Quantitative Descriptive Analysis ◽  
Qualitative Descriptive ◽  
Quantitative Descriptive

This research categorized as Research and Devenlopment (R&D) that aims to (1) describe and identify the design process and the feasibility of learning materials of Bali based on Balinese culture, (2) to describe and analyze the responses of VII grade students of SMP PGRI 3 Denpasar towards the development of Indonesian language based materials of local culture Bali. The data obtained through observation, interview, and questionnaire methods. Furthermore, the collected then analyzed by qualitative descriptive analysis and quantitative descriptive analysis. The results showed that the development of Indonesian language learning materials based on local Balinese culture included into very well category. It was based on the validation results by the subject matter expert who gave an assessment with an average score of 88.42. The results of the pilot test, both initial field trials and major field trials also showed an average score of 90.28 and 92.50 included in the excellent category. Moreover, a good response is also obtained in this study, the overall average score given by students as users of teaching materials is 4.45 included very positive category. Thus, it can be concluded that the developed teaching materials are feasible to be used in the learning process.

scholarly journals PENGEMBANGAN INSTRUMEN PENILAIAN ASPEK PSIKOMOTORIK PADA PRAKTIKUM FAKTOR-FAKTOR YANG MEMPENGARUHI LAJU REAKSI KELAS XI IPA SMA NEGERI 3 PONTIANAK

2018 ◽  
Vol 6 (2) ◽  
Author(s):  
Septian Triadi Syahputra
Keyword(s):  
Reaction Rate ◽  
Field Trials ◽  
Assessment Instrument ◽  
Assessment Instruments ◽  
Main Field ◽  
Initial Field ◽  
Factors Affecting ◽  
Average Value ◽  
Rate Of Reaction ◽  
Very High

The aim of this study was to develop the psychomotor assessment instruments on experiment of factors that influence the rate of reaction which is feasible to be used. The development model used in this research was the modification model of 4P development into 3P which is recommended by Thiagarajan that is defining, designing and developing. Data collection techniques used were structured observation and questionnaire. The research instruments used were observation sheet and questionnaire. Initial field trials conducted on six students of class XII IPA 1, involving four observers while the main field trial conducted on 36 students of class XI IPA 1. The researcher involved four observers and one chemistry teacher. The feasibility of the developed psychomotor aspects assessment instrument is based on validity and practical aspects. The results obtained in this study were: (1) the average value of the validity of the psychomotor aspects assessment instrument was 1.00 with very high criteria and (2) the practicality of the psychomotor aspects assessment instrument based on the observers' response of 94.44 with very high criteria and teachers' response 90.27 with very high criteria. Based on the validity and practicality of the psychomotor aspect appraisal instrument the factors affecting the reaction rate are feasible to use

scholarly journals Developing the socioculture-based thematic-integrative learning module for improving the learning motivation and the critical thinking

2018 ◽  
Vol 6 (2) ◽  
pp. 157-165
Author(s):  
Sulistiya Ingwarni
Keyword(s):  
Critical Thinking ◽  
Field Trials ◽  
Learning Motivation ◽  
Integrative Learning ◽  
Initial Field ◽  
Learning Modules ◽  
Learning Module ◽  
Fourth Grade Students ◽  
Sociocultural Background ◽  
Thematic Learning

This study aims to (1) produce thematic integrative learning modules based on sociocultural background feasible to increase student’s learning motivation and critical thinking, and (2) determine the effectiveness of the integrative thematic learning module. This research was included in the type of research and development (R & D). Development procedures in this study adapting development procedures developed by Borg and Gall with steps, namely: (1) a preliminary study, (2) planning, (3) the design of the product, (3) field trials beginning, (5) the revision of the results of the initial field trials, (6) the main field trials, (7) the revision of the main results of field trials, (8) operational field trials, (9) the improvement of the final product. The subjects of the trial are fourth-grade students Jejeran, Bantul. The results show that (1) the integrative thematic learning module based on sociocultural background feasible according to media experts and subject matter experts with category ratings "very good". (2) The integrative thematic learning modules based on the sociocultural background is effective to improve student’s learning motivation and critical thinking. It is based on the results obtained by operational field trials p <0.05, which means that there are significant differences on motivation to learn and critical thinking of students who take the learning of the module and who do not use the learning module.

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