bluuebunny/crossref_metadata_2025 huggingface dataset:
Tromboembolismo Venoso em Idade Pediátrica: Estudo Retrospetivo de 15 Anos
Authors: Andrade Joana Verdelho , Magalhães Joana , Resende Catarina , Gomes Dora , Laranjo Gabriela , Campos Joana , Santos Elisabete , Faria Cristina
Published: March 2019

Introdução: O tromboembolismo pulmonar e trombose venosa profunda ocorrem em idade pediátrica com incidência, morbilidade e mortalidade desconhecidas. O objetivo foi rever epidemiologia, apresentação clínica, exames complementares de diagnóstico e prognóstico de doentes com tromboembolismo pulmonar e trombose venosa profunda.Material e Métodos: Estudo retrospetivo, descritivo e analítico de doentes pediátricos internados num hospital de nível II por tromboembolismo pulmonar e trombose venosa profunda, entre 2000 e 2014. Estudaram-se características demográficas, história clínica, comorbilidades e fatores de risco.Resultados: Foram internados 11 doentes (sete com tromboembolismo pulmonar, cinco com trombose venosa profunda e um com ambos), 64% do género feminino e idade média de 16 anos. Todos os doentes com tromboembolismo pulmonar referiam toracalgia/dispneia, 25% síncope/palpitações e 25% febre. Todos os doentes com trombose venosa profunda referiam dor no local da obstrução, 83% edema/cianose do membro afetado e 17% febre. O estudo da trombofilia positivo foi o fator de risco mais frequente nas duas entidades. O valor médio dos D-dímeros foi 3252 ug/L e 2660 ug/L no tromboembolismo pulmonar e trombose venosa profunda, respetivamente. Todos os doentes iniciaram anticoagulação, três necessitaram de cuidados intensivos, três apresentaram sequelas e houve um óbito.Discussão: Todos os doentes tinham pelo menos um fator de risco associado e as condições de hipercoagulabilidade herdadas foram o fator de risco mais frequentemente encontrado nos nossos adolescentes.Conclusão: O aumento da incidência na população pediátrica descrito na literatura pode ser atribuído à crescente sensibilização para esta patologia, aos avanços médicos e aumento da sobrevida de doenças crónicas. Escasseiam recomendações baseadas na evidência que identifiquem os doentes com risco de trombose, para que as decisões possam ser tomadas de forma cuidadosa, equilibrando o risco e benefício em cada caso.
Validation of the Skindex-29 Questionnaire: Portuguese Version (Portugal)
Authors: Carvalho Daniela , Aguiar Pedro , Palma-Carlos Antero
Published: March 2019

Introduction: There is an increasing interest regarding the impact of skin diseases on quality of life. Skindex-29 is a questionnaire developed to evaluate this impact. This study aimed to validate Skindex-29 for the Portuguese population.Material and Methods: From the 81 approached patients from two clinics, only 75 finished the study: 35 with skin disease and 40 without. A translation and back-translation were performed. Concerning accuracy and discrimination power, the scores were submitted to ROC curve analysis after being compared between both groups through Mann-Whitney test. Internal consistency was measured using Cronbach’s α coefficient. Test/retest of each scale was assessed by the intra-class correlation coefficient, and by Kappa coefficient of agreement. Convergent validity was evaluated through Spearman correlations between Skindex-29 scores and SF-12 subscales. SPSS statistics and values of p < 0.05 with 95% confidence intervals were considered statistically significant.Results: The Skindex-29 demonstrated to be an accurate instrument and statistically significant differences were found when comparing the disease and without-disease groups (p < 0.001). The reliability was high (Cronbach’s α > 0.80) for each dimension ('Symptoms', 'Emotions' and 'Functioning') and for test-retest (ICC > 0.90, K > 0.494). About convergent validity, Skindex-29 Total score and the questions about 'Symptoms' and 'Functioning' were statistically correlated with the questions regarding the physical state of the SF-12 (-0.478; -0.459; -0.405, respectively).Discussion: Results suggest that Skindex-29 can be used as an instrument to evaluate skin diseases’ effect on quality of life in Portugal, being accurate and reliable. Despite having similar general health profiles as other individuals, dermatological patients showed a lower quality of life due to their disease. Results showed that Skindex-29 was better at assessing physical components rather than mental oremotional components.Conclusion: Skindex-29 appears to have evidence of validity including accuracy and reliability to be used as an instrument to evaluate the impact of skin diseases on quality of life in Portugal.
Neuroborreliose Tardia num Estudante em Programa Erasmus
Authors: Santos Fábio Videira , Cipriano Ana , Abreu Miguel Araújo , Andrade Carlos , Sarmento-Castro Rui
Published: March 2019

A doença de Lyme é uma zoonose endémica nos Estados Unidos da América (EUA), na Ásia e no continente europeu, nomeadamente nos países do centro da Europa. Trata-se de uma doença multissistémica, com manifestações cutâneas, articulares, neurológicas e cardíacas, que variam de acordo com a fase da doença. Apresentamos o caso de uma neuroborreliose tardia num jovem estudante belga a residir temporariamente no Porto. Discutimos a importância da suspeita epidemiológica, a investigação etiológica, os critérios de diagnóstico e o tratamento mais adequado.
Anxiety, Depression and Academic Performance: A Study Amongst Portuguese Medical Students Versus Non-Medical Students
Authors: Moreira de Sousa João , Moreira Cátia A. , Telles-Correia Diogo
Published: March 2019

Introduction: The aim of the study is to assess the prevalence of anxiety and depressive symptoms in Portuguese medical students compared to students of other faculties, and the possible impact those symptoms have on academic performance.Material and Methods: A cross-sectional study was conducted in a sample of 750 students: 512 medical students and 238 nonmedical students. All students anonymously completed a socio-demographic survey and the Hospital Anxiety and Depression Scale (HADS). Statistical analysis was performed using the chi-square test, Mann-Whitney test, Spearman correlation coefficient or Kruskal-Wallis test.Results: We found a prevalence of 21.5% (n = 161) for anxiety symptoms and 3.7% (n = 28) for depressive symptoms. Being a medical student was more significantly associated with symptoms of anxiety (p = 0.034) compared with other students. Depressive symptoms were slightly associated with poor academic performance (p < 0.01). A percentage of 59.6% (n = 96) of students with anxiety symptoms and 46.4% (n = 13) of students with depressive symptoms did not seek medical or psychological care at that time.Discussion: Medical students in this sample seem to have more symptoms of anxiety, possibly explained by a higher number of female students in that sample. Depressive symptoms could be associated with poor academic performance in both groups, but an evident correlation was not established.Conclusion: Considering the high levels of anxiety symptoms, the possible impact of depressive symptoms in academic performance and the lack of psychiatric or psychological follow-up reported in this study, it is urgent to develop adequate means of support to improve students’ well-being and mental health.
Fresh and hardened properties of self-compacting concrete containing of cement kiln dust
Authors: Agwa Ibrahim Saad , Ibrahim Omar Mohamed Omar
Published: March 2019

There are many wastes form the cement industry among them cement kiln dust (CKD). This residue is obtained after the process of burning the raw materials of cement in the rotary kiln where it is suctioned by fans during the clinker exit of the rotary kiln. Cement dust is a major environmental and economic problem in terms of high quality air pollution ranging from (20-100) microns and the proportions of chlorides, sulphates, alkali and lime living in a way that threatens the general health of human, as well as water pollution if the waste is discharged by rivers and waterways. This investigation’s main objective is to present the potential of using CKD as a cement replacement in self-compacting concrete (SCC). Eight mixes incorporating CKD with partial cement replacement of 0%, 5%, 10%, 20%, 30%, 40%, 50% and 75% in addition to control mix were investigated. The properties of all mixture were determined. Based on the experimental program results, it was found that SCC mixture incorporating 5% to 10% of CKD was almost similar to that of control mixture. The workability of SCC concrete decreased as CKD replacement increased. This established benefits of substituting cement by CKD to make SCC.
Transcriptional Activation of Elephant Shark Mineralocorticoid Receptor by Corticosteroids, Progesterone and Spironolactone
Authors: Katsu Yoshinao , Kohno Satomi , Oka Kaori , Lin Xiaozhi , Otake Sumika , Pillai Nisha E. , Takagi Wataru , Hyodo Susumu , Venkatesh Byrappa , Baker Michael
Published: March 2019

We report the analysis of activation by corticosteroids and progesterone of full-length mineralocorticoid receptor (MR) from elephant shark, a cartilaginous fish belonging to the oldest group of jawed vertebrates.  Based on their measured activities, aldosterone, cortisol, 11-deoxycorticosterone, corticosterone, 11-deoxcortisol, progesterone and 19-norprogesterone are potential physiological mineralocorticoids.  However, aldosterone, the physiological mineralocorticoid in humans and other terrestrial vertebrates, is not found in cartilaginous or ray-finned fishes.  Because progesterone is a precursor for corticosteroids that activate elephant shark MR, we propose that progesterone was an ancestral ligand for elephant shark MR.  Although progesterone activates ray-finned fish MRs, progesterone does not activate human, amphibian or alligator MRs, suggesting that during the transition to terrestrial vertebrates, progesterone lost the ability to activate the MR.  Comparison of RNA-sequence analysis of elephant shark MR with that of human MR suggests that MR expression in the human brain, heart, ovary, testis and other non-epithelial tissues evolved in cartilaginous fishes.  Together, these data suggest that progesterone-activated MR may have unappreciated functions in elephant shark ovary and testis.
On New Quicker N-Tupled Xed Point Implicit Iterations for Contractive-Like Mappings and Comparison of their Rate of Convergence in Hyperbolic Metric Spaces
Authors: H. Soliman Ahmed , A. Barakat Mohamed , Imdad M. , Nabil Tamer
Published: March 2019

In this paper, we study the convergence of new implicit iterations dealing with n-tupled fixed point results for nonlinear contractive-like mappings on W-hyperbolic metric spaces. Herein, we demonstrate that our newly implicit iteration schemes have faster rate of convergence than implicit S-iteration process, implicit Ishikawa and Mann type iteration processes. Furthermore, a numerical simulation to improve our theoretical results is obtained.
TEKNIK PENERJEMAHAN UNSUR KOHESI GRAMATIKAL KONJUNGSI PADA NOVEL FĪ SABĪLI A'T-TĀJ
Authors: Muhammad Yunus Anis Ticha Fauziyatul Anwar,
Published: March 2019

This research will elaborate deeply about the variant of conjunction in Arabic language and its techniques of translation. The investigating of translation techniques had the significant role in the process of translation. The translation problems had been found in the process of translation, especially related to the arabic conjunction. The analysis of variant techniques of translation towardsthe arabic conjunction can be investigated by the theory of gramatical equivalence between Arabic (L1) and Bahasa Indonesia (L2). This research aims to elaborate comprehensively about the variant construction of cohesive conjunction in Arabic language and its variant models of translation into Bahasa Indonesia. The second aim of this research is to investigate the techniques of translation toward the construction of cohesive conjunctions, especially in the Arabic prose Fi Sabiili At-Taaj which had been translated by Choirul Anwar into Bahasa Indonesia as "Ambisi Meraih Mahkota" published by Fajar Pustaka (2001). This research had been classified as descriptive qualitative model. The data had been classified using the random sampling method. The result of the research had been concluded that: (1) the Arabic adversative conjunctions had been translated into "tidak", "tetapi", and "bahkan" in Bahasa Indonesia. (2) the Arabic additive conjunctions had been translated into "dan", "lalu", and "maupun" in Bahasa Indonesia. (3) the Arabic temporal conjunctions had been translated into "kemudian" and "akhirnya" in Bahasa Indonesia. (4) the Arabic causal conjunctions had been translated into "sehingga" and "sampai" in Bahasa Indonesia. (5) several techniques had been implemented in the translations of Arabic novel FiiSabiili At Taaj, such as: literal, reduction, discursive creation, linguistic amplification, established equivalence, transposition, linguistic compression, and calque.
Land cover analysis based on descriptive statistics of Sentinel-2 time series data
Authors: Varga Orsolya , Gombosné Nagy Ildikó , Burai Péter , Tomor Tamás , Lénárt Csaba , Szabó Szilárd
Published: March 2019

In our paper we examined the opportunities of a classification based on descriptive statistics of NDVIthroughout a year’s time series dataset. We used NDVI layers derived from cloud-free Sentinel-2 imagesin 2018. The NDVI layers were processed by object-based image analysis and classified into 5 classes, inaccordance with Corine Land Cover (CLC) nomenclature. The result of classification had a 76.2% overallaccuracy. We described the reasons for the disagreement in case of the most remarkable errors. .
Impact of corporate social responsibility strategies on consumer patronage of telecommunication industry: an MTN experience in Enugu state
Authors: O. Okolo Victor
Published: March 2019

The purpose of this study is to investigate the impact of corporate social responsibility (CSR) strategies on consumer patronage of telecommunication industry: an MTNF Science and Technology State. It specifically aims to determine the influence of MTNF Science and Technology Scholarship Scheme as a CSR strategy on consumer patronage of MTN and also, to assess the influence of MTN Foundation Restructured Schools Connect Project as a CSR strategy on the corporate image of MTN. The survey research method was chosen for the study. The study population comprises subscribers of MTN in Enugu State, which is 1,295.918. A sample size of 400 was determined using Taro Yamane’s formula. Applying the simple linear regression, the findings revealed that MTNF Science and Technology Scholarship Scheme as a CSR strategy has a significant influence on consumer patronage of MTN (r = 0.945; t = 56.377; F = 3173.334; p < 0.05). Similarly, it was revealed that there is significant influence of MTN Foundation Restructured Schools Connect Project as a CSR strategy on corporate image of MTN (r = 0.978; t = 92.313; F = 8521.649; p < 0.05). Consequently, the study concludes that CSR is an effective marketing strategy for acquiring customer patronage and generating goodwill and good corporate image. Therefore, MTN should consolidate on executing and improving on CSR projects. This is highly significant as improved CSR will ensure improved customer patronage and boost good corporate image for MTN.
Synthesis of noval gold nanomaterials and it's detection of sewage
Authors: Nie Furong , Ai Jun
Published: March 2019

In this article we report a novel approach to polyvinyl pyrrolidone k-30 (PVP)-templated formation of fluorescent gold nanoparticles (Au NPs) with pore structure and its application to sewage detection. For the first time the method of generating PVP-encapsulated Au NPs in aqueous solution is demonstrated. It was found that the formation of fluorescent Au NPs have highly fluorescent signal. Through the adsorption experiment, it is concluded that the methylene blue is adsorbed on Au NPs. This work successfully develops the capping PVP scaffolds of fluorescent Au NPs with pore structure. This experiment lays a foundation for the application of Au NPs in the field of environmental applications.
Hydrogenotrophic biogas upgrading integrated into WWTPs: enrichment strategy
Authors: Corbellini V. , Catenacci A. , Malpei F.
Published: March 2019

Within the European circular economy roadmap, it is important for wastewater treatment plant (WWTPs) to recover energy and become energy-neutral or -positive. In the last few years, it has become increasingly interesting to boost energy recovery through the biogas upgrading. The aim of this work is to study a rapid hydrogenotrophic methanogenic culture enrichment strategy capable of limiting the organic degradation unbalance and allowing a fast start-up phase of the in situ biogas upgrading reactors, at pilot- or full-scale. The approach was tested with two, plus one control, laboratory-scale continuous stirred tank reactors filled with anaerobic sludge collected from a full-scale WWTP. The experimentation lasted 50 days and was divided into five phases: the anaerobic digestion start-up followed by four H2 injection phases (H2/CO2 ranging from 1:1 to 4:1 on molar basis). Despite a temporary slight increase in the total concentration of volatile fatty acids during phase II (2.56 gCH3COOH·L−1), and in phase III a mild pH increase (anyway, below 7.4) indicating the expected CO2 depletion, the strategy proposed was effective. In the last phase, in the biogas a methane content of about 80% was achieved, thus suggesting that the use of H2/CO2 above the stoichiometric value could further improve the biological biogas upgrading.
Antidiabetic Activity of the Methanolic Extracts of Thuja occidentalis Twings in Alloxan-induced Rats
Authors: Tyagi C.K. , Porwal Pawan , Mishra Neeraj , Sharma Amit , Chandekar A. , Punekar R. , Punniyakoyi V.T. , Kumar Ajay , Anghore Durgadas
Published: March 2019

Objective and Background:

In hyperglycemic and alloxan-induced diabetic rats,
the effect of Thuja occidentalis methanolic residue extract on blood glucose levels and some
biochemical parameters were investigated.

Methods:

Significantly decreased blood glucose level by 22.85% and 27.66%, in hyperglycemic
rats, respectively after 3 h, were seen in a single oral administration of the extract at a
dose of 200 and 400 mg/kg. Blood glucose level was decreased by 50% in alloxan-induced
diabetic rats within three weeks of daily treatment of Thuja occidentalis methanolic residue
extract (200 and 400 mg/kg p.o). Alloxan-induced diabetic rats showed significant hypercholesterolemia
in comparison with the control in alloxan induced rats.

Results:

In both normal and diabetic rats, there was also a significant decrease of elevated
serum cholesterol and triglycerides. Hypertriglyceridemia was also shown to be prevented
by treatment with plant extract (200 and 400mg/kg p.o) (p<0. 05). As compared with the
control animals, diabetic control rats did not show any change in a level of creatinine and
urea.

Conclusion:

Thuja occidentalis treatment may improve glucose homeostasis in alloxaninduced
diabetes and alleviate kidney and liver function. Thuja occidentalis twigs could be a
potential source of the new oral antidiabetic drug.
Predicting Posttraumatic Stress Disorder Risk: A Machine Learning Approach (Preprint)
Authors: Wshah Safwan , Skalka Christian , Price Matthew
Published: March 2019

BACKGROUND

A majority of adults in the United States are exposed to a potentially traumatic event but only a handful go on to develop impairing mental health conditions such as posttraumatic stress disorder (PTSD).

OBJECTIVE

Identifying those at elevated risk shortly after trauma exposure is a clinical challenge. The aim of this study was to develop computational methods to more effectively identify at-risk patients and, thereby, support better early interventions.

METHODS

We proposed machine learning (ML) induction of models to automatically predict elevated PTSD symptoms in patients 1 month after a trauma, using self-reported symptoms from data collected via smartphones.

RESULTS

We show that an ensemble model accurately predicts elevated PTSD symptoms, with an area under the curve (AUC) of .85, using a bag of support vector machines, naive Bayes, logistic regression, and random forest algorithms. Furthermore, we show that only 7 self-reported items (features) are needed to obtain this AUC. Most importantly, we show that accurate predictions can be made 10 to 20 days posttrauma.

CONCLUSIONS

These results suggest that simple smartphone-based patient surveys, coupled with automated analysis using ML-trained models, can identify those at risk for developing elevated PTSD symptoms and thus target them for early intervention.
El resplandor de una joya roja. Juan Rulfo en la Colección Centro Mexicano de Escritores de la Biblioteca Nacional de México
Authors: Martínez Torres José
Published: March 2019

En este artículo son analizados algunos documentos del Expediente 203 de la Colección Centro Mexicano de Escritores, correspondiente a Juan Rulfo. Se busca poner de relieve la importancia de este organismo en el campo literario, particularmente sobre Rulfo. Para ello tomé fragmentos de las reseñas y de algunos informes que envió al lugar del que formó parte durante tres décadas, si bien de modo interrumpido, primero en calidad de becario y después como asesor. Usé también dos publicaciones aparecidas en 1981 y 1991, las cuales dan a conocer testimonios de becarios, funcionarios y asesores, además de otros artículos que confirman, enriquecen o ponen en duda los datos expuestos. Todo lo anterior lleva a comprender por qué se identificó tanto al novelista con la primera escuela de escritura creativa del país.
“Visitas a las casas de los impresos”. Estantes para los impresos. Espacios para los lectores. Siglos XVIII-XIX
Authors: Castro Miguel Ángel
Published: March 2019

Reseña de:Estantes para los impresos. Espacios para los lectores. Siglos XVIII-XIX. Laura Suárez de la Torre, coord. Historia Social y Cultural. México: Instituto Mora, 2017, 375 pp. ISBN: 978-607-94-7557-4.
Si El Renacimiento tendía la mano, de El Libre Pensador asomaba el acero. Antagonismo en la República Restaurada
Authors: Mercado Noyola Francisco
Published: March 2019

Este artículo expone las condiciones históricas que, durante la República Restaurada en México, dieron origen a un proyecto editorial como la revista El Renacimiento (1869), cuya consigna era acoger en su seno las producciones literarias de todas las plumas conspicuas del país, sin importar su filiación o pasado político. Este esfuerzo, liderado por Ignacio Manuel Altamirano, tuvo considerable cuórum por parte de los principales literatos, tanto liberales como conservadores. Un año más tarde, ante la virulencia del periódico católico La Voz de México, aparece El Libre Pensador. El presente trabajo pretende contrastar los textos y posturas de ambas publicaciones liberales.
DAFTAR ISI Jurnal Media Teknik Sipil Vol. 10 No.1 Hal. 01-79 Februari 2012
Authors: ISI DAFTAR
Published: March 2019

Pengaruh Penggunaan Fly Ash Pada Beton Mutu Normal Dan Mutu Tinggi Ditinjau Dari Kuat TekanDan AbsorbsiBorris Berqa Leovie Haf .................................................................................................................1 - 9Perencanaan Perlindungan Dan Perbaikan Pantai Desa Banyusangka Kecamatan Tanjungbumi KabupatenBangkalan MaduraHari Eko Meiyanto ........................................................................................................................10 - 13Kajian Biaya Operasional Kendaraan Angkutan Penumpang Umum Kota MalangKhoirul Abadi ................................................................................................................................14 - 19Pengaruh Penambahan Serbuk Bata Merah Terhadap Stabilitas Tanah Lempung Sebagai Tanah DasarJalanMoch. Sholeh 1,Dandung Novianto 2 ,Gerard Aponno 3 ..........................................................20 - 26Penetapan Model Bangkitan Pergerakan Untuk Beberapa Tipe Perumahan Di Kota PematangsiantarMuhammad Efrizal Lubis1,Novdin M Sianturi 2 ......................................................................27 - 34Studi Kebutuhan Bukaan Pada Bangunan Perumahan Type Menengah Dengan Pendekatan PencahayaanOde Rapija GW ............................................................................................................................35 - 40Batako Lumpur Lapindo Sebagai Alternatif Material Pasangan DindingRofikatul Karimah ........................................................................................................................ 41 - 48Studi Perencanaan Normalisasi Sungai Kali Sono Di Kota MadiunSribanun Laila Sa’adah Heremba ................................................................................................49 - 53©Algoritma Genetik Untuk Meningkatkan Kinerja Model Tangki Standar Pada Analisa TransformasiData Hujan Menjadi Data Aliran SungaiSulianto .........................................................................................................................................54 - 62Pengaruh Material Dinding Semen Eceng Gondok Terhadap Penyerapan Suara (Fungsi Akustik)Winodianto Dodi Iffandani ..........................................................................................................63 - 69Perbandingan Mortar Berpasir Pantai Dan SungaiYusuf Wahyudi ..............................................................................................................................70 - 79
PENGARUH PENGGUNAAN FLY ASH PADA BETON MUTU NORMAL DAN MUTU TINGGI DITINJAU DARI KUAT TEKAN DAN ABSORBSI
Authors: Leovie Haf Borris Berqa
Published: March 2019

Fly ash was used in K300 quality and K500 concrete. To find out pressure strength andabsorption, there used cube test with 15 cm measurement. Concrete mixture planning used methodof DOE (development of Environmental). In K300 with FAS 0.63, slump 3 cm – 6 cm and in K500with FAS 0,41, slump 8 cm - 12 cm. by fly ash variances 0%, 30% cementious and 30% additivefrom the total weight of cement. The pressure strength test was done when the concrete age was7, 14 and 28 days. Absorption was tested when the concrete age was 28 days.In this research, concrete with strength K300 and strength K500 showed similar reaction in allvariances of concrete mixture. Fly ash as additive was better compared with its role as cementious.Since both tester showed increasing in concrete pressure for 10% from concrete without fly ash.And fly ash as cementious showed decreasing in concrete pressure for 10% from concrete withoutfly ash, where the avarege of pressure in K300 was 362 kg/cm2 for concrete without fly ash, 273kg/cm2 for concrete with 30% cementious and 398 kg/cm2 for concrete with 30% additive. Andfor K500 concrete were 568 kg/cm2 for concrete without fly ash, 443 for concrete with 30%cementious and 628 kg/cm2 for concrete with 30% additive. And absorption in strength K300 was0.384% for concrete without fly ash, 0.379% for concrete with 30% cementious and 0.363% forconcrete with 30% additive. And also in strength K500 with 0.276% for concrete without fly ash,0.274% for concrete with 30% cementious and 0.259% for concrete with 30% additive.Keyword : ly Ash, Absorption, Cementious, Additive
PEMAKAIAN FLY-ASH SEBAGAI CEMENTITIOUS PADA BETON MUTU TINGGI DENGAN STEAM CURING (THE USE OF FLY-ASH AS CEMENTITIOUS ON HIGH-STRENGTH CONCRETE WITH STEAM CURING)
Authors: Rommel Erwin , Rusdianto Yunan
Published: March 2019

Erwin Rommel1 & Yunan Rusdianto2Jurusan Teknik Sipil Fakultas Teknik Universitas Muhammadiyah MalangAlamat Korespondensi :Jalan Raya Tlogomas 246 Malang 65144email : erwin67pro@yahoo.com HP 08123314432ABSTRACTThe use of fly-ash as cementitious will be made to utilize physical and chemical properties offly-ash that has a dominan of silica and good of modulus fines. The use of steam curing will be donein this study which can speed up the cycle of making concrete. This is advantageous in the productionof precast concrete and velocity field construction.The research was conducted by making concrete cube 15x15x15 cm for 80 pieces and thentested the compressive strength and absorption of concrete. Achieve the quality of concrete madewith the provision of K600 with giving the fly-ash respectively 7.5%, 15% and 30% by weight ofcement.The results of the research obtained by the use of fly-ash as much as 7.5% as a cementitiousthat was given to the steam curing will provide the initial strength of concrete reached 47% ofcompressive strength at 28 days. While the effect of giving fly-ash in concrete has not seen absorptionsignificantly when compared to concrete without fly-ash.Key word : concrete, fly-ash, steam curing
STUDI PERILAKU CAMPURAN LATASTON (HRS-WC) DENGAN “LIMBAH KARET BAN LUAR” SEBAGAI BAHAN PENGGANTI SEBAGIAN ASPAL
Authors: Putra Kiswara Candra , Saiful Amal Andi
Published: March 2019

STUDI PERILAKU CAMPURAN LATASTON (HRS-WC) DENGAN“LIMBAH KARET BAN LUAR” SEBAGAI BAHAN PENGGANTISEBAGIAN ASPALCandra Putra Kiswara 1& Andi Saiful A21&2Jurusan Teknik Sipil Fakultas Teknik Universitas Muhammadiyah MalangAlamat korespondensi : Jalan Raya Tlogomas 246 Malang 65144e-mail: candra_sum@yahoo.co.id, andiamal99@yahoo.co.idABSTRACTWaste to be one of the problems facing the nation at this time. Community is very disturbed bythe presence of various types of waste that is around their neighborhood. Ranging from industrialwaste to the waste home.The basic requirements of a road construction is to prepare the surface layer of a flat andstrong to ensure high security for a long time and the preservation of every detail in a variety ofweather. It required an asphalt mixture that is capable of supporting loads as well as capture thedamaging effects of traffic and the weather (climate) and can provide good service.With the addition of waste tire rubber is significantly affect mixture properties such Lataston(HRS-WC) Stability, Marshall Quontient, Flow and Air Voids. This is evidenced by the results oftesting using a Marshall. The average value of stability the average of 1220 kg. For Lataston (HRSWC)mix with additives outer tire rubber to rubber optimum levels (KKO) 11,50%, to produce amixture of qualities: Marshall Stability value = 1220 kg, Marshall Quotient value = 7,2 kN / mm,Value Air Marshall voids = 10,00%, Value Bitumen film thickness = 5,6 mm.Key Word: Waste Tire Rubber, Marshall Caracteristic
INDEK KERENTANAN DAN AMPLIFIKASI TANAH AKIBAT GEMPA DI WILAYAH UNIVERSITAS MUHAMMADIYAH JEMBER
Authors: . Muhtar , Alihudien Arief
Published: March 2019

INDEK KERENTANAN DAN AMPLIFIKASI  TANAH AKIBAT GEMPA DI  WILAYAH UNIVERSITAS MUHAMMADIYAH JEMBERVulnerability and Soil Amplification Index Due to Earthquake in The University Muhammadiyah JemberMuhtar1 & Arief Alihudien21Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah Jember2Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah JemberAlamat Korespondensi : Perum Taman Bambu B-01 Jember 68124Email : 1)muhtar.fitrah@gmail.comAbstractNatural phenomena of earthquakes until now could not be predicted and the exact time it happened. Earthquake danger can not be avoided but its impact can be reduced through assessment activities characteristic earthquakes in a region that will be applied in the selection of methods and policies for disaster risk management. Residential areas adjacent to the source of the earthquake is an earthquake-prone area so, therefore it is necessary strategic steps to protect the public and disaster mitigation measures are an attempt to reduce or minimize the impact of loss or damage that may be caused by the disaster. The study was conducted to provide information to the seismic vulnerability using multicriteria analysis of conditions in the region include University of Muhammadiyah Jember dominant period land values   and the value of the amplification factor. The experiment was conducted using subsurface observation with mikrotremoR. From the results of geological studies research area is the basic constituent of igneous rocks such as tuff Argopuro. The results showed that the natural frequency of the soil and soil amplification is at 2,692 and 4,625 Hz. whereas soil vulnerability index value is equal to 7,946.Key Words : seismic, vulnerability, indexAbstrakFenomena alam gempa bumi sampai saat ini belum bisa diprediksi dan waktu yang tepat itu terjadi . Bahaya gempa tidak dapat dihindari namun dampaknya dapat dikurangi melalui kegiatan penilaian gempa bumi karakteristik di daerah yang akan diterapkan dalam pemilihan metode dan kebijakan untuk manajemen risiko bencana . Daerah pemukiman yang berdekatan dengan sumber gempa adalah daerah rawan gempa sehingga , oleh karena itu langkah-langkah strategis yang diperlukan untuk melindungi tindakan publik dan mitigasi bencana merupakan upaya untuk mengurangi atau meminimalkan dampak kerugian atau kerusakan yang mungkin disebabkan oleh bencana. Penelitian ini dilakukan untuk memberikan informasi kepada kerentanan seismik menggunakan analisis multikriteria kondisi di kawasan ini mencakup Universitas Muhammadiyah Jember nilai tanah periode dominan dan nilai faktor amplifikasi . Penelitian dilakukan dengan menggunakan observasi bawah permukaan dengan mikrotremoR. Dari hasil daerah penelitian studi geologi adalah konstituen dasar batuan beku seperti tuf Argopuro . Hasil penelitian menunjukkan bahwa frekuensi alami amplifikasi tanah dan tanah di 2,692 dan 4.625 Hz . sedangkan nilai indeks kerentanan tanah sama dengan 7946 .Kata Kunci : seismik , kerentanan , indeks
PENGARUH PEMBERIAN JUMLAH DAN RASIO (L/d) SERAT BENDRAT TERHADAP SIFAT MEKANIK BETON
Authors: Hafiz S.G Ahmad , Rommel Erwin , Prasetyo Lukito
Published: March 2019

PENGARUH PEMBERIAN JUMLAH DAN RASIO (L/d) SERAT BENDRAT TERHADAP SIFAT MEKANIK BETONThe Influence of Steel Fiber Amount And L/D ratio to Mechanical Properties of ConcreteAhmad Hafiz S.G1, Erwin Rommel2, Lukito Prasetyo31 Staf Badan Perencana dan Pengembangan Kampus UMM2,3 Jurusan Teknik Sipil Universitas Muhammadiyah MalangAlamat korespondensi : email: erwin67pro@yahoo.com, ahafizsg16@gmail.com, prasetyo.lukito@gmail.comAbstractFiber concrete is the concrete which is mixed with fiber. The fiber was mixed into the concrete with the addition of fiber percentage. In this research, the fiber used was bendrat fiber. It had a diameter 0.8 mm which was cut be 1 cm, 2 cm, and 3 cm. Thus, the ratio (l/d) of fiber bendrat got 12,5 ; 25; and 37,5. Moreover, the amount of additional fiber used was 1 %, 2 % and 3 % from the amount of each cement ratio.In this research made 60 test concrete cylinder (150x300) mm in each of the 30 cylinder for testing compressive and 30 cylinders for testing tensile of the concrete. As for testing shear strength made 30 concrete specimen the shaped doubel-L (200x300x75) mm.The research results obtained that the wearing of a fiber ratio L/d = 12.5 will be able to enhance the tensile strength and shear stregth of concrete where fiber consumption bendrat as much as 3% obtained the greatest tensile strength 2,41 MPa or increased twice from the concrete without fibres, while for maximum shear strength reach 4,94 MPa with an increase of 54% compared to concrete without fibresKeywords: fiber concrete, steel fiber, tensile strength, shear strengthAbstrakBeton serat adalah bahan beton yang dicampur dengan serat dengan persentase tertentu. Dalam penelitian ini,serat yang digunakan adalah serat bendrat. Serat bendrat berdiamtere 0,8 mm dipotong-potong dengan panjang 1 cm, 2 cm dan 3 cm sehingga menghasilkan rasio L/d masing-masing 12,5; 25; dan 37,5. Sedangkan banyaknya serat yang ditambahkan terhadap volume berat yang digunakan masing-masing ; 1%, 2% dan 3%. Dalam penelitian dibuat 60 silinder diameter 150 mm dengan tinggi 300 mm masing-masing 30 silinder untuk pengujian tekan dan 30 silinder untuk pengujian tarik belah beton. Sedangkan untuk pengujian geser beton dibuat 30 specimen beton berbentuk doubel-L berukuran (200x300x75) mm. Hasil penelitian diperoleh bahwa pemakaian serat dengan rasio L/d=12,5 akan dapat meningkatkan kuat tarik dan kuat geser beton dimana pemakaian serat bendrat sebanyak 3% diperoleh kuat tarik terbesar 2,41 MPa atau meningkat 2 kali dari beton tanpa serat, sedangkan untuk kuat geser maksimal mencapai 4,94 MPa dengan kenaikan 54% dibandingkan dengan beton tanpa serat.Kata kunci : beton serat, serat bendrat, kuat tarik, kuat geser.
Redaksi dan Pedoman Penulisan Jurnal Media Teknik Sipil, Vol 13, No. 2, Agustus 2015
Authors: Pedoman Penulisan Redaksi &
Published: March 2019

Redaksi dan Pedoman Penulisan Jurnal Media Teknik Sipil, Vol 13, No. 2, Agustus 2015ISSN 1693 - 3095PENGELOLAH “MEDIA TEKNIK SIPIL” JURUSAN TEKNIK SIPIL FAKULTAS TEKNIK UNIVERSITAS MUHAMMADIYAH MALANGVolume 13 Nomor 2, Agustus 2015Pembina : Dekan Fakultas TeknikPenanggung Jawab : Ketua JurusanPimpinan Redaksi : Ir. Erwin Rommel, MT.Tim Editor : 1. Dr. Ir. Sunarto, MT. 2. Dr. Ir. Samin, MT 3. Ir. Andi Saiful Amal, MT. 4. Rini Febri Utari, S.Pd., MT. Mitra Bestari : 1. Dr. Ir. Sri Sunarjono ( Universitas Muhammadiyah Surakarta) 2. Dr. Ir. Bambang Supriyadi, CES.DEA (Universitas Gajahmada) 3. Dr. Ing. Ir. Andreas Triwiyono 4. Dr. Ir. Ussy Andawayanti, MS 5. Herdin Prihantono, MT., PhD.Pelaksana Teknis : Apdani, S.Sos. Jurnal Media Teknik Sipil diterbitkan oleh Jurusan Teknik Sipil Fakultas Teknik Universitas Muhammadiyah Malang, secara berkala dengan terbit setiap bulan Februari dan Agustus, Redaksi “Media Teknik Sipil” menerima tulisan berupa artikel ilmiah dari praktisi, peneliti, akademisi, pemerhati keteknik sipilan secara luas. Untuk informasi lebih lanjut dapat ditanyakan kepada alamat redaksi. Alamat Redaksi Jurnal “Media Teknik Sipil”Jurusan Teknik Sipil Fakultas TeknikUniversitas Muhammadiyah MalangJln. Raya Tlogomas No.246 Malang 65144Telpon: (0341)464318130, Fax: (0341) 460782 E-mail : jurnal.sipil.umm@gmail.comhttp://ejournal.umm.ac.id/index.php/jmts/issue/archive
PEMANFAATAN LIMBAH BATU MARMER SEBAGAI PENGGANTI AGREGAT KASAR PADA CAMPURAN ASPAL BETON TERHADAP KARAKTERISTIK MARSHALL
Authors: Syaiful Amal Andi , Saleh Chairil
Published: March 2019

PEMANFAATAN LIMBAH BATU MARMER SEBAGAI PENGGANTI AGREGAT KASAR PADA CAMPURAN ASPAL BETON TERHADAP KARAKTERISTIK MARSHALLThe Implementation Of Stone Marble Waste For Changer The Aggregate Rough To Mix Aplhalt Concrete Characteristics Of MarshalAndi Syaiful Amal1 & Chairil Saleh21,2Jurusan Teknik Sipil – Fakultas Teknik Univ. Muhammadiyah MalangAlamat Korespondensi : Jl. Raya Tlogomas No. 246 Malang 65144Email : andiamal99@yahoo.co.idAbstractThe waste of marble stone is waste produced when manufactured processing of unused marble. The utilization of marble for road ossification material is one way to alleviate that waste of marble stone. The purpose of this research is finding out the advantage of marble stone waste as replacement of crude aggregate partly toward marshall characteristic on mixture of the concrete asphalt layer (Laston). Laston mixture with marble stone waste as replacement of crude aggregate used variation of 5%, 10%, 15%, 20%, 25%, 30% and 35%. The result is ascertainable that using of marble stone waste is able to increase the marshall characteristic. The best laston mixture is produced content optimum of marble stone waste 17,5%, The laston mixture produced : marshall stability 1050 kg, marshall quotient 2,5 KN/mm, volume air void 4,5 % and film thickness 8,8 mm.Keyword : Laston Mixture, Marble Stone Waste, Marshall CharacteristicAbstrakLimbah batu marmer merupakan limbah yang dihasilkan pada saat proses pengolahan batu marmer yang tidak dimanfaatkan. Pemanfaatan limbah batu marmer untuk material perkerasan jalan adalah salah satu cara untuk mengurangi limbah batu marmer tersebut. Penelitian ini bertujuan untuk mengetahui manfaat limbah batu marmer sebagai pengganti agregat kasar terhadap karakteristik marshall pada campuran laston. Campuran laston dengan limbah batu marmer sebagai pengganti agregat kasar menggunakan variasi 5%, 10%, 15%, 20%, 25%, 30%, dan 35%. Hasil penelitian ini diketahui bahwa penggunaan limbah batu marmer dapat meningkatkan karakteristik Marshall. Campuran laston terbaik dengan limbah batu marmer sebagai pengganti agregat kasar dihasilkan kadar limbah batu marmer optimum 17,5%, menghasilkan campuran laston : marshall stability 1050 kg, marshall quotient 2,5 KN/mm, volume air void 4,5 % dan film thickness 8,8 mm.Kata kunci: campuran laston, limbah batu marmer, karakteristik marshall.
Analisa BOK (Biaya Operasi Kendaraan) Shuttle Service Rute Bandung – Jakarta Selatan
Authors: Akbardin Juang , Putra Andri Eka
Published: March 2019

The opening of the toll road Cipularang provide opportunities for business people open a travel service (shuttle service) “point to point” are scattered in several points in Bandung. Another phenomenon occurs on the field gap between the performance of the travel srvices to the satisfaction of passengers. This, prompted the authors to conduct a study of the level of analytic of vehicle operating cost for services of travel. Due to limited funds, manpower, and time, the scope of this final study is limited to the South Jakarta – Bandung route. The purpose of this study was to measure and compare the performance of the travel (shuttle service) Bandung- South Jakarta route to the satisfaction of passengers. In this study using quantitative methods with descriptive analysis techniques. The data used were obtained from the results of a questionnaire survey / questionnaire and interview. The sampling technique is Probability Sampling is done using simple random sampling method with a sample of 390 respondents taken as users travel (shuttle service) Bandung- South Jakarta route. Data analysis using the method of Importance Performance Analysis. Based on the analysis, a gap in variable costs, travel time, and travel itineraries. Variable costs and passenger safety is still not good and a top priority for improvement.
Kajian Potensi dan Prioritas Lokasi Dry Port di Malang dan Pasuruan
Authors: Bintang Rahadi , Sulistyo Harnen , Arifin Muhammad Zainul
Published: March 2019

The objectives of this study are knowing the current logistic performance based on customers perceptions, knowing the probability of dry port’s usage and the recommendations of dry port location with high priority in Malang and Pasuruan. This study uses Principle component analysis, stated preference dan analytic hierarchy process. Based on the results, the logistic performance index of Tanjung Perak Port-Malang route is 3.4, relatively even with Tanjung Perak Port-Pasuruan route that has index 3.41 at likert scale. For the both routes, commodity and transportation infrastructure have low score, less than 3 at likert scale. The probability usage is 88.95% when dry port gives3 days shorter in dwelling time, predicted lead time, five hundred thousand rupiahs cheaper in transportation and storage cost and 2 hours faster in travel time for logistic activities of  a 20 feet container on Tanjung Perak Port-Pasuruan route. Pasuruan with priority weight 57.66% is more prioritized than Malang which has priority weight 42.34% as dry port location.To optimize the implementation of dry port in proposed location, increasing the commodity, transportation infrastructure and cargo clearance services at dry port integrated to seaport are recommended
KUAT TEKAN BETON LIMBAH BATU ONIX TULUNGAGUNG
Authors: Setyowati Edhi Wahjuni
Published: March 2019

Limbah dari industri onyx dan marmer Tulungagung cukup berlimpah dan untuk menanggulangi permasalahan limbah ini, sangat berpotensi untuk dimanfaatkan sebagai agregat pada campuran beton yang dirancang sebagai beton struktural dengan kekuatan tekan mencapai 30 MPa. Penelitian kekuatan tekan beton limbah batu onix dilakukan terhadap 30 buah benda uji silinder beton 15x30 cm yang diuji pada umur : 7, 14, 21 dan 28 hari, dengan perencanaan campuran beton untuk mencapai kekuatan 30 MPa dengan FAS ; 0,4. Hasil penelitian didapatkan nilai kuat tekan beton limbah batu onix memenuhi target, dengan perbandingan kekuatan yang hampir sama dengan beton normal dengan agregat batu pecah ,dengan perbedaan nilai kuat tekan sekitar 2% dengan beton normal dengan perencanaan campuran beton yang sama. Dari hasil tersebut dapat dinyatakan bahwa penggunaan batu onyx sebagai bahan pengganti batu pecah dapat digunakan sebagai beton struktural dengan warna beton yang lebih terang dan lebih bernilai estetika.
PERBANDINGAN PENGGUNAAN POLYPROPILENE (PP) DAN HIGH DENSITY POLYETHYLENE (HDPE) PADA CAMPURAN LASTON_WC
Authors: Rahmawati Anita
Published: March 2019

Aspal dapat dimodifikasi dengan menambahkan berbagai jenis aditif. Salah satu aditif yang biasa digunakan adalah berupa polimer seperti Polypropilene (PP) dan High Density Polyethylene (HDPE). Penambahan polimer biasanya meningkatkan kekakuan aspal dan meningkatkan kerentanan suhu. Peningkatan kekakuan aspal akan meningkatkan ketahanan campuran terhadap rutting dari suhu dan cuaca yang  panas. Penelitian ini dilakukan untuk mengetahui pengaruh pemanfaatkan limbah plastik PP dan HDPE sebagai campuran pada  beton aspal (Laston_WC) dengan menggunakan parameter Marshall. Parameter Marshall yang digunakan yaitu stabilitas, flow, VIM, VMA, VFA dan MQ. Prosentase PP dan HDPE yang digunakan sebagai campuran aspal sebesar 0%, 2%, 4% dan 6% dari berat aspal yang digunakan. Hasil uji Marshall menunjukkan bahwa nilai stabilitas, flow, VFA dan MQ memiliki kecenderungan mengalami peningkatan dengan bertambahnya  prosentase kadar PP dan HDPE yang digunakan. Tetapi, nilai VIM dan VMA memiliki kecenderungan menurun dengan bertambahnya prosentase PP dan HDPE. Hal ini dapat dilihat bahwa pengaruh penambahan PP pada campuran aspal beton akan memberikan nilai karakterisk Marshall yang lebih baik dari campuran aspal beton dengan HDPE.
KAJIAN KARAKTERISTIK DAS UNTUK DAERAH TANGKAPAN HUJAN WADUK SERMO KABUPATEN KULON PROGO, DAERAH ISTIMEWA YOGYAKARTA
Authors: Nifen Silta Yulan , Kironoto Bambang Agus , Luknanto Djoko
Published: March 2019

Manusia memiliki peran penting terhadap suatu Daerah Aliran Sungai (DAS). Setiap aktivitas yang dilakukan manusia sangat berpengaruh terhadap DAS, baik secara langsung maupun tidak langsug. Pengolahan Karakterisitik DAS untuk DTH Waduk Sermo menggunakan software Arc.GIS 10.1. Parameter Bifurcation Ratio DTH Waduk Sermo diperoleh Br < 3 yang berarti alur sungai mempunyai kenaikan muka air banjir dengan cepat sedangkan penurunnya lambat, perhitungan nilai kerapatan aliran (Dd) DTH Waduk Sermo yaitu 1,86 km/km2 tergolong sedang berarti kondisi material bawah permukaannya kedap air dengan vegetasi yang sedang. Untuk Indeks CN DTH Waduk Sermo memperoleh 81,3 yang berarti potensi aliran permukaan tinggi, kandungan liat tinggi dan permeabilitas rendah.
OPTIMASI DIAMETER JARINGAN PIPA DALAM SISTEM PENYEDIAAN AIR BERSIH (PDAM) DI KEC. BULULAWANG KAB. MALANG MENGGUNAKAN LINEAR PROGRAMMING
Authors: Saleh Chairil
Published: March 2019

Salah satu peran penting dari sistem penyediaan air bersih adalah jaringan perpipaan. Kinerja pelayanan sistem penyediaan air bersih tidak hanya ditentukan oleh besarnya kapasitas sumber, namun volume air tersebut juga harus sampai pada simpul-simpul layanan dengan aliran dan tinggi tekanan yang memadai sesuai kebutuhan. Disamping itu efektivitas sebuah jaringan pipa juga dapat diukur dari besarnya biaya investasi dan operasionalnya selama usia guna yang ditetapkan. Agar dicapai kondisi tekanan dan debit yang memadai, perlu dilakukan analisis diameter yang cermat. Linear programing merupakan satu teknik penyelesaian riset operasi yang dapat menyelesaikan masalah-masalah optimasi. linear programming digunakan untuk meminimasi biaya akibat pemakaian diameter pipa. Pada penelitian ini diambil sampel data jaringan pipa distribusi air bersih di Kec.Bululawang Kab.Malang. Dengan metode linear programing didapat hasil optimasi diameter pada masing-masing pipa di Kec. Bululawang Kab. Malang dengan pemilihan diameter pipa utama antara 3 inch sampai 8 inch dan energi tekan atau energy relatif yang dihasilkan adalah 7 meter sampai 20 meter sesuai standart ijin yang ditetapkan.