bluuebunny/crossref_metadata_2025_split huggingface dataset:
Nghiên cứu thực nghiệm khả năng chịu tải trọng nén dọc trục của cột tròn bê tông cốt thép
Authors: Vũ Nguyễn Anh , Đạt Phạm Xuân 
Published: May 2020

Ảnh hưởng của hiệu ứng bó (confinement effects) đối với ứng xử nén của cấu kiện cột bê tông cốt thép (BTCT) đã được nghiên cứu rộng rãi trên thế giới trong nhiều năm gần đây cả trên phương diện lý thuyết và thực nghiệm. Ứng dụng của hiệu ứng bó cũng đã được đưa vào một số tiêu chuẩn thi công và thiết kế kết cấu xây dựng quốc tế như tiêu chuẩn Mỹ ACI 318-19 hay Eurodoce EC2. Tuy nhiên, ở Việt Nam khái niệm này vẫn còn đang tương đối mới mẻ, đặc biệt là rất ít nghiên cứu thực nghiệm (nếu có) được công bố trong nước. Bài báo trình bày kết quả thí nghiệm nén đến khi phá hoại đối với 16 mẫu cột tròn có đường kính 150 mm và chiều dài 600 mm với các bước đai xoắn và mác bê tông khác nhau nhằm đánh giá ảnh hưởng của hiệu ứng bó lên ứng xử nén của loại cấu kiện này. Kết quả thí nghiệm cho thấy mặc dù hàm lượng và bước cốt đai xoắn có ảnh hưởng nhất định đối với khả năng chịu nén của cột, sự ảnh hưởng không thực sự rõ ràng đối với cả sức kháng nén dọc trục. Kết quả thí nghiệm cũng được so sánh với giá trị dự báo lý thuyết theo mô hình vật liệu do Mander và cs. đề xuất năm 1988. Nghiên cứu cũng đã đưa ra một số đánh giá và kiến nghị trong việc xem xét khả năng chịu nén của cột tròn bị ảnh hưởng bởi hiệu ứng bó do cốt đai gây ra.
Từ khóa:
cột bê tông cốt thép; khả năng chịu nén; hiệu ứng bó; đai xoắn; nghiên cứu thực nghiệm.
Xây dựng phương pháp tính toán tải lạnh – tải nhiệt theo chế độ không ổn định
Authors: Chấn Trần Ngọc , Quang Trần Ngọc , Hiếu Bùi Thị , Trung Bùi Quang , Huệ Nguyễn Thị , Duy Nguyễn Văn , Đạt Mạc Văn 
Published: May 2020

Tính toán chính xác tải lạnh – tải nhiệt là một khâu rất quan trọng trong quá trình thiết kế hệ thống điều hòa không khí (TG-ĐHKK). Nó không những giúp cho việc lựa chọn và lắp đặt hệ thống đúng yêu cầu để duy trì điều kiện tiện nghi nhiệt bên trong nhà mà còn có tác dụng giảm thiểu chi phí năng lượng trong quá trình vận hành hệ thống. Tuy nhiên hiện nay các phương pháp tính toán tải lạnh – tải nhiệt tại Việt Nam vẫn dựa trên chế độ ổn định với thông số tính toán có độ an toàn cao mà không kể đến diễn biến trong ngày của các thông số khí hậu bên ngoài cũng như dao động nhiệt tắt dần và lệch pha khi đi qua kết cấu bao che (KCBC), dẫn đến kết quả tải lạnh tính toán tăng cao. Một số phần mềm thương mại nước ngoài được sử dụng để tính toán, tuy nhiên rất khó kiểm định được tính khách quan và sự tuân thủ các qui định về tiêu chuẩn và điều kiện khí hậu Việt Nam. Bài báo này trình bày phương pháp tính toán tải lạnh – tải nhiệt theo chế độ không ổn định. Đây là phương pháp được sử dụng phổ biến tại các nước tiên tiến trên thế giới. Phương pháp tính mới này sẽ là công cụ phục vụ cho công tác thiết kế, nghiệm thu và kiểm toán năng lượng cho các hệ thống TG-ĐHKK trong công trình.
Từ khóa:
tải lạnh – tải nhiệt; chế độ không ổn định; chế độ ổn định; thông gió – điều hòa không khí.
Contents Vol. 30 no. 2 July – December 2015
Authors: Head and Neck Surg Philipp J Otolaryngol 
Published: May 2020

EDITORIAL
4 Impact, Not Just Impact Factor: Responding to the Manila Declaration on the Availability and Use of Health Research Information
Lapeña JF
SPECIAL ANNOUNCEMENT
6 Manila Declaration on the Availability and Use of Health Research Information in and for Low- and Middle-Income Countries in the Asia Pacific Region
ORIGINAL ARTICLES
8 Otorhinolaryngologic Manifestations of Human Immunodeficiency Virus Infection in Manila, the Philippines
Arriola ACP, Chua AH, Abrenica RJT
13 Value of the 6-hour Postoperative Ionized Calcium Slope in Predicting Post-Thyroidectomy Occurrence of Hypocalcemia
Cabance RE, Cruz ES
19 Complications of Head and Neck Reconstructive Surgery Using Axial Pedicled Flap
Dy AES, Alfanta EM, Chiong AM
25 Extended Transpalatine Approach for Excision of Juvenile Angiofibroma
Hernandez JG, Cabungcal AA, Carrillo RJC
30 Spontaneous Passage of Ingested Coin in Children
Estolano PJL, Chua AH
CASE REPORTS
34 Chemodectoma and Tetralogy of Fallot
Santiago KJB, Samio LMR, Roldan RA, Castañeda SS
38 Descending Necrotizing Mediastinitis, A Dreaded Complication of Acute Tonsillitis
Go MSC, Cruz ETS
43 Sinonasal Ameloblastic Carcinoma in a 50-Year-Old Filipino Female
Del Mundo DAA
47 Primary Laryngeal Aspergillosis in a Postpartum Patient
Villanueva JCR, Opulencia AP, Calavera KZ, Lim WL
SURGICAL INNOVATIONS AND INSTRUMENTATION
50 A Myringotomy and Ventilating Tube Applicator: New Look at a Five-Century-Old Procedure
Amable JPM, Sia-Vargas LL
LETTER TO THE EDITOR
56 A Cotton Wick Improves Hearing in a Patient with Profound Hearing Loss
Carrillo RJD, Grullo PER, San Agustin MLM
FEATURED GRAND ROUNDS
59 Stridor at Birth: Congenital Laryngeal Web
Pascual MVP
62 Hypopharyngeal, Supraglottic and Subglottic Stenosis After 1 Week Intubation
Reyes NKS
FROM THE VIEWBOX
65 Facial Palsy and Mastoiditis from Fibrous Dysplasia
Bickle IC
UNDER THE MICROSCOPE
67 Metastasizing Ameloblastoma
Atun JML, Carnate JM
PENGARUH PEMBELAJARAN SAINTIFIK MODEL PROBLEM BASED LEARNING (PBL) DAN PROJECT BASED LEARNING (PJBL) TERHADAP HASIL BELAJAR MAHASISWA JURUSAN PGSD UNIPA SURABAYA PADA POKOK BAHASAN HAM
Authors: Atnuri Atnuri , Prastyo Danang 
Published: May 2020

Penelitian ini bertujuan untuk mengetahui pengaruh pembelajaran Saintifik Model Problem Based Learning (PBL) dan Project Based Learning (PjBL) terhadap hasil belajar mahasiswa Jurusan PGSD Unipa Surabaya pada pokok bahasan HAM.Pengambilan sampel dilakukan dengan teknik random sampling. Populasi penelitian ini adalah mahasiswa PGSD Unipa Surabaya. Sedangkan sampel penelitian ini adalah mahasiswa angkatan 2014 yang terdiri dari tiga kelas, yaitu kelas A,B dan C. Validitas yang digunakan adalah validasi isi dan konstruk. Reliabilitas dalam penelitian ini diuji dengan menggunakan teknik KR-20. Analisis data dilakukan dengan bantuan program statistik SPSS versi 17 for windows. Dari analisis data penelitian diperoleh ada perbedaan hasil belajar antara model PBL dengan PjBL, hal ini dapat dilihat dari hasil signifikasi sebesar 0.035. Artinya, pada penelitian ini hipotesis diterima dengan asumsi Ho ditolak dan Ha diterima. Jadi dapat disimpulkan ada pengaruh perbedaan hasil belajar mahasiswa Jurusan PGSD Unipa Surabaya dengan menggunakan pembelajaran Saintifik Model Problem Based Learning (PBL) dengan Project Based Learning (PjBL) pada pokok bahasan HAM.

Kata Kunci: Problem Based Learning (PBL), Project Based Learning (PjBL), Hasil Belajar
IMPLEMENTASI SANGGUL UKEL TEKUK SEBAGAI SANGGUL JAWA
Authors: Hipij Vony Fatmawati , Sulistyami Sulistyami 
Published: May 2020

This research aims to see the results of ukel tekuk implementation. The design in this study using one shot case study with research subject of university student Adi Buana force of 2017 which amounted to 35 people. The research method used is a performance test to make buck ukel buckling. The conclusions of this study found that bun buckling uk is widely used by royal families, permasuri, princesses, host or caregiver and followed by the surrounding community. Keywords: ukel tekuk style, one shot case study, performance test.
IMPLEMENTASI TEKNIK MASSAGE PADA MATERI PERAWATAN BADAN BAGI MAHASISWA BERKEBUTUHAN KHUSUS UNIVERSITAS ADI BUANA SURABAYA
Authors: Hipij Vony Fatmawati 
Published: May 2020

Penelitian ini bertujuan untuk mendeskripsikan peran pengajar dalam melaksanakan kegiatan pembelajaran massage dalam perawatan tubuh. Metode penelitian yang digunakan adalah pendekatan kualitatif deskriptif. Subjek penelitian adalah mahasiswa berkebutuhan khusus (MBK) tata rias angkatan 2017 yang memprogram matadiklat spa, perawatan badan dan aroma terapi. Teknik pengumpulan data adalah observasi, wawancara, dan dokumentasi. Hasil penelitian adalah dosen pendidik melakukan kegiatan identifikasi dan penilaian dalam kegiatan pembelajaran awal, penyusunan program dalam bentuk program pembelajaran individual, implementasi program dan evaluasi. Kesimpulan penelitian ini adalah dosen telah melaksanakan program kebutuhan khusus yang melibatkan kegiatan penilaian, penyusunan program, pelaksanaan program, dan evaluasi telah berjalan dengan baik.
DESAIN KNOCK-DOWN ERGONOMIS PENJERNIH AIR
Authors: Santoso Gempur 
Published: May 2020

Manusia tidak akan lepas dari kenutuhan air. Kebutuhan air merupakan kebutuhan yang mendasar bagi kehidupan. Salah satu sumber mata air yang digunakan adalah air sumur. Air sumur saat ini banyak tercemar akibat dari pencemaran limbah industri maupun limbah rumah tangga, sehingga perlu dilakukan penjernihan. Salah satu alat untuk penjernihan yaitu knock down ergonomis penjernih air. Tujuan alat ini agar mudah dibawa dan mudah untuk pemasangan serta tidak membutuhkan teknologi yang tinggi. Fungsi knock down penjernih air ini digunakan untuk menurunkan kadar TDS (total dissolved solids).Tahapan penelitian meliputi tahap penelitian pendahuluan, tahap pengumpulan dan analisis data, tahap desain, dan tahap perancangan prototype/produk. Metode pengumpulan data dengan penyebaran angket kepada responden. Sedangan analisis data menggunakan QFD (Quality Function Deployment). Hasil penelitian ini terdapat tujuh atribut tingkat kepentingan responden terhadap desain knock-down ergonomis penjernih air yang dijadikan dasar pembuatan prototype, yakni: 1) desain yang menarik,2) bahan tidak mudah korosif, 3) bahan tidak mudah pecah, 4) tahan terhadap karat, 5) produk mudah dibawa/simple,6) harga yang murah, dan 7) pemasangan yang mudah.
Selección de genotipos de papa (Solanum tuberosum L.) adaptados a las condiciones agroecológicas del Estado Mérida, Venezuela
Authors: Y. Araujo ; L Niño; J. Gabriel L. González ; M. Osorio; 
Published: May 2020

La papa es considerada uno de los principales cultivos agrícolas en el mundo en cuanto a superficie. En Venezuela, ocupa el octavo lugar en producción y primer lugar de las raíces y tubérculos. Para consumo fresco predomina el cultivar Granola, de origen alemán, susceptible a candelilla tardía (Phytophthora infestans). En este contexto, el objetivo de la presente investigación fue seleccionar los genotipos de papa (Solanum tuberosum L.) adaptados a las condiciones agroecológicas del estado Mérida. La emergencia de los genotipos estuvo por encima del 80% en todas las localidades consideradas. Los valores de AUDPC variaron de 0 hasta 7865 en el testigo susceptible. Siete clones y cinco cultivares no presentaron la enfermedad, mientras los mayores valores de AUDPC fueron para los cultivares Granola, Diacol Capiro, Andinita y Montañita, por lo que estos materiales mostraron baja resistencia a candelilla tardía. El rendimiento promedio más alto se registró en el clon 301002.6 (49.63 t.ha-1), mientras que el menor se obtuvo en Única - Peruana (4.14 t.ha-1). El 85 % de los materiales superaron al testigo en rendimiento. De acuerdo a la prueba múltiple de Duncan se formaron 23 grupos, observándose que estadísticamente existen diferencias altamente significativas entre los genotipos evaluados (p<0,001). La materia seca (% sólidos) estuvo por encima del 14 %, no obstante, superaron el 15 % de defectos totales por lo que solo resultaron aptas para la industrias los clones 382121.25, 382151.22 y los cultivares María Bonita, Iniafrit, Fripapa y Diacol Capiro.
Forestland management and empowerment: A phenomenological inquiry into the experiences of women forestland managers in the state of Georgia, USA
Authors: Harriman Hallie C. , Fuhrman Nicholas E. , Kelsey Kathleen D. , Woosnam Kyle Maurice 
Published: May 2020

Women are increasingly becoming the primary decision-makers of forested properties throughout the United States. The purpose of this study was to understand the experiences of women forestland owners in Georgia. A qualitative phenomenological research design was used to interview nine female forestland owners. Three themes emerged from the semi-structured interviews. Participants stated that land management involved: (a) initial feelings of inadequacy (an imposter syndrome), (b) personal and professional resources, and (c) genuine relationships. The theory of empowerment provided a basis for interpreting the findings and aided in the development of recommendations for future practice and research. We found that women experienced a temporary imposter stage early in land management that gave way to feeling empowered as their experiences with managing land increased. Access to trustworthy information, as well as genuine relationships with forestry professionals and other landowners, played key roles in such advancement. We recommend strategies for natural resource professionals to consider, including encouraging formal and informal networking opportunities when working with female audiences, including at educational outreach events like those hosted by Extension.
RESPONSE OF COCONUT TO INCREASING LEVELS OF LEAF PRUNING AND ITS IMPLICATIONS ON FARM PRODUCTIVITY
Authors: S.S. Magat  , L.H. Canja  , R.Z. Margate  
Published: May 2020

Effects on nut production and copra (wt/nut and yield/tree of four leaf pruning conditions (LP): control (no LP); LP from leaf 24; leaf 19 and leaf 14 with 31, 23, 18 and 13, remaining leaves on each palm, respectively, was studied on adult bearing palms at the Davao Research Center, Philippine Coconut Authority. As a reference point, leaf 1 is considered as the youngest expanded leaf, while leaf 19, the one supporting the 7‑8 month old developing nuts or buko.

Except in the first year of LP of which nut and copra yields under all LP conditions were similar to the unpruned palms, the following second and third years of LP indicated that leaf pruning from leaf 19 or maintaining only the 18 younger, upper leaves of the tree crown strongly showed the capability of the coconut to still support the normal development and maturity of nuts. As a result of LP, sunlight transmission to intercrops increased by about 120% compared to unpruned palms. This was translated to higher intercrop yield of corn (2.16 t increased to 3.71 t/ha) which is strongly attributed to the average 4,000 ft candles of sunlight (190.5 PAR) observed with LP from leaf 19 and the rest of the leaves below.

In relation to increased sunlight transmission, intercropping, water economy and drought tolerance, pest and disease control and added income from pruned leaves, implications of LP are pointed out.
COCONUT TAPPING IN THE PHILIPPINES ENIGMAS AND OBSERVATIONS
Authors: Rebecco M. Santiago  , Ma Solita J. Virtudazo  
Published: May 2020

Individual interviews were conducted to 24 purposively selected coconut tappers from Leyte, Samar and Cebu, Philippines to determine their tapping practices and observations and knowledge on certain phenomena exhibited by the tapped palm, as well as, the problems which confront them. Specifically, inquiries were focused on tree selection, spadix/inflorescence age appropriate for tapping, spadix preparation and stimulation, spadix care and maintenance, climatic considerations and relations, and temporary cessation of inflorescence production.

Data revealed certain enigmatic phenomena and some inconsistencies to long‑held physiological facts. Moreover, respondents' observations strongly point out the toddy yield's extreme sensitivity to climatic and weather change which could be best validated by further coconut physiology research.
PHYSIOLOGICAL ASPECTS OF IN VITRO-GROWN COCONUT (Cocos nucifera L.) PLANTS DURING ACCLIMATIZATION
Authors: C S Ranasinghe  , L K Weerakoon  , Y  M H Liyanage  , D T Mathes  
Published: May 2020

The physiological status of in vitro-grown coconut (Cocos nucifera L.) plants during acclimatization was studied using nursery-raised seedlings as the control. The percentage of open stomata in leaves of in vitro-grown coconut plants was high at the initial stage of acclimatization but decreased during the course of acclimatization indicating an improvement in stomatal regulation. A progressive increase in the stomatal density, epicuticular wax deposition and leaf thickness in in vitro-grown plants was observed during acclimatization. As a result of the low light intensity, the epidermal cells of in vitro-grown plants were narrower and longer when compared to the control. With the exposure of plants to increased light intensity, the cells became wider and shorter as observed in the control.

The leaf chlorophyll content was high in in vitro-grown plants under low light intensity. With increasing light intensity, a reduction in leaf chlorophyll content in vitro-grown plants was observed and at the later stages of acclimatization, it was comparable to that of the control. Variations in the rates of photosynthesis and transpiration in vitro-grown plants were observed in response to the changing environmental conditions. However, at the end of acclimatization, where the plants were ready to be transferred to the field, the physiological statuses of in vitro-grown coconut plants were comparable to that of nursery raised seedlings. The present study revealed that the embryo-cultured coconut plants could adjust well to the changing environmental conditions during acclimatization.
COCONUT SEED GARDENS: A REVIEW
Authors: D.V. Liyanage  
Published: May 2020

Coconut Seed Gardens are necessary for the mass production of improved coconut cultivars.They will play a dominant role in dvelopment programmes until tissue culture creates new plants.

Models of seed gardens developed in Sri Lanka, Indonesia and Ivory Coast are outlined. The differences between them with regard to structure and management are enumerated.
FRESH AND PRESERVED COCONUT MILK
Authors: Robert Hagenmaier  
Published: May 2020

This article was written with two goals. The first is to show that coconut milk is an important product, at least to those in­ volved in the production of coconuts. The second is to suggest how the market for preserved coconut milk might be expanded.

We will first review how coconut milk is consumed, for what purposes and in what quantity. Next we will look at the diffe­rent kinds of preserved coconut milk. Finally, we will consider how the market for preserved coconut milk might be bolstered by standardizing its quality.
THE PRODUCTION AND PROPERTIES OF COCONUT STEM CHARCOAL IN THAILAND
Authors: J. Dootson  , Peyanoot Naka  , Maliwan Rattanapruk  , Panit Ngangoranatigar  
Published: May 2020

A programme of experimentation and training on the production of charcoal from coconut stems in transportable metal k.ilns was carried out. Comparisons were made between different timber densities, preparation methods and kiln loading systems. Other timber sources and traditional kilns were used. The highest density coconut wood produced the best charcoal and extensive preparation was found to be necessary. Local clay kilns produced excellent charcoal, but were slow and needed considerable fuel. Coconut stem charcoal. production was markedly different from carbonisation of wood from dicotyledonous trees.

The charcoal produced was found to have similar calorific value to that from other woods, but was faster‑burning and easier to ignite. Content of volatile matter was low and little ash was produced. The charcoal was often rather wet. A sample of consurners found that the charcoal was better than they had expected. The main complaint was the speed of burning.
SEQUENTIAL COCONUT TODDY (SAP) AND NUT PRODUCTION
Authors: J.N. MARAVILLA  , S.S. MAGAT  
Published: May 2020

Production schemes, namely sequential, production of coconut sap/toddy and nuts in same spathe/spadix (SCTNP); nut production only (NP) and toddy production only (CTWS) were tested at PCA Davao Research Center, using Laguna Tall for a period of three years. Palms under the CTWS and the SCTNP had more coconut sap yield over the periodic tapping and nut production (3 or 6 month’s duration) in three years of tapping operation. Annual toddy yield in the SCTNP did not differ significantly with the CTWS during the first and third years of tapping. Generally nut yield of palms with SCTNP was about 50% lower than control palms (NP). As compared to palms under NP, copra yield per palm with SCTNP was likewise around 50% lower. Leaf nutrient concentrations of N, P, K. Ca. Mg, Na, Cl, S and B were not significantly affected by toddy‑lapping under the four production schemes.

Results clearly showed that the sequential coconut toddy and nut production (SCTNP) is strongly feasible and economically viable to supply both toddy and nuts as farm products by small scale coconut farmers. Compared to the traditional practice of producing nut alone (P 7,500.00 per ha average annual income), SCTNP provides an average net income of P 71,000.00 per ha (P 520.00 per tree), annually.
A Probabilistic Approach to Kepler Completeness and Reliability for Exoplanet Occurrence Rates
Authors: Bryson S. , Coughlin J. , Batalha N. M. , Berger T. , Huber D. , Burke C. , Dotson J. , Mullally S. E. 
Published: May 2020

Abstract
Exoplanet catalogs produced by surveys suffer from a lack of completeness (not every planet is detected) and less than perfect reliability (not every planet in the catalog is a true planet), particularly near the survey’s detection limit. Exoplanet occurrence rate studies based on such a catalog must be corrected for completeness and reliability. The final Kepler data release, DR25, features a uniformly vetted planet candidate catalog and data products that facilitate corrections. We present a new probabilistic approach to the characterization of Kepler completeness and reliability, making full use of the Kepler DR25 products. We illustrate the impact of completeness and reliability corrections with a Poisson-likelihood occurrence rate method, using a recent stellar properties catalog that incorporates Gaia stellar radii and essentially uniform treatment of the stellar population. Correcting for reliability has a significant impact: the exoplanet occurrence rate for orbital period and radius within 20% of Earth’s around GK dwarf stars, corrected for reliability, is

, whereas not correcting results in

—correcting for reliability reduces this occurrence rate by more than a factor of two. We further show that using Gaia-based versus DR25 stellar properties impacts the same occurrence rate by a factor of two. We critically examine the the DR25 catalog and the assumptions behind our occurrence rate method. We propose several ways in which confidence in both the Kepler catalog and occurrence rate calculations can be improved. This work provides an example of how the community can use the DR25 completeness and reliability products.
Magnetic Field Effects on the Vishniac Overstability in Scaled Radiative Blast Waves
Authors: Riley N. J. , Quevedo H. J. , Bengtson Roger D. , Ditmire T. , Kimmel M. , Speas C. S. , Porter J. L. 
Published: May 2020

Abstract
We report experimental results on the stability of a magnetized laser-launched blast wave scaled to simulate a late-stage supernova remnant. We extend previous results to show the effect of a dynamically significant magnetic field on the spatial mode spectrum of the instability. We find that magnetic fields reduce instability growth, possibly influencing turbulent feedback to the interstellar medium.