34 research outputs found

    ANALISA DAYA DUKUNG PONDASI TIANG PANCANG MENGGUNAKAN METODE ANALITIS DAN METODE NUMERIK DENGAN PROGRAM PLAXIS PADA PROYEK PEMBANGUNAN JEMBATAN SICANANG

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    Suatu konstruksi bangunan dibagi menjadi dua bagian penting yakni bangunan atas dan bangunan bawah.Untuk konstruksi pada bagian bawah biasanya disebut dengan pondasi. Pondasi merupakan bangunan bawah yang berfungsi untuk memikul beban bangunan yang ada diatasnya tanpa mengakibatkan adanya penurunan bangunan di luar batas   toleransinya. Oleh sebab itu, dibutuhkan analisa daya dukung dan deformasi dalam merencanakan sebuah pondasi agar diketahui apakah pondasi tersebut memenuhi rencana awal atau tidak. Dari data SPT yang diperoleh dari proyek pembangunan  Jembatan  Sicanang  diketahui besar daya dukung ultimit pondasi tiang pancang dengan menggunakan metode Meyehof pada kedalaman 58m adalah 377,57Ton,sedangkan berdasarkan Metode Elemen Hingga dengan program Plaxis 8.6 danpemodelan Mohr-Coloumb diperoleh 363,92 Ton. Daya dukung ultimitlateralpondasi dengan Metode Broms secara analitis sebesar 10,18 Ton dan secara grafis 10,32 Ton dan nilai ini tidak berbeda jauh. Nilai Efisiensi kelompok tiang diperoleh dari metode Converse-Labarre yaitu sebesar 0,677. Penurunan elastic tiang tunggal diperoleh sebesar 11,791 mm, penurunan tiang dengan metode Poulos dan Davis sebesar 8,6mm, penurunan tiang kelompok dengan metode Vesic sebesar 66,4 serta penurunan dengan Metode Elemen  Hingga program Plaxis 8.6 sebesar 285,66m akibat beban 100Ton. Dari hasil yang diperoleh, bahwa pada penggunaan metode numerik yang menggunakan PLAXIS didapat nilai daya dukung  yang lebih kecil dan nilai penurunannya  besar sehingga pada penggunaan metode numerik hasil yang didapat bisa digunakan untuk perencanaan suatu pondasi jembatan, dan penggunaan metode numerik sangatlah membantu dan efisien dalam menganalisa suatu perencanaan.

    A rare case of posttraumatic bilateral orbital myositis in a young boy — a case report

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    Orbital myositis (OM) is a benign inflammatory disease of the orbit characterised by a polymorphous lymphoid infiltrate with varying degrees of fibrosis, without a known local or systemic cause. In this paper, we present a case of a young boy who sustained a trauma to his eyes a few days prior to admission, after which he developed bilateral orbital pain and ocular motility limitation. He underwent the appropriate investigations including orbital imaging and blood laboratory workup, which were all consistent with a diagnosis of posttraumatic bilateral orbital myositis. He was treated with steroids for few weeks, and when the dose of steroids was tapered, he had a relapse of the same disease with a different presentation, which was later controlled with a higher dose of steroids, after which the patient went into remission

    The Importance of Innovative Work Behavior in Era Industrial Revolution 4.0

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    Innovative Work Behavior (IWB) is a concept in Industrial Revolution 4.0 to encourage business growth, competitiveness, and success. Organizations that prioritize innovation and encourage creativity are expected to thrive in the current dynamic and unpredictable business environment. This study aims to provide ideas, suggestions and contributions to researchers who examine IWB variables, making it easier for researchers to determine the antecedent and consequent variables as well as the sectors to be studied. This study uses a literature review method to investigate the antecedents, consequences, and sectors that are involved in IWB by reviewing 44 articles from the Scopus database that have been reviewed. In addition, this study uses a bibliometric technique in order to find IWB’s compatibility. Results indicate that IWB has 63 antecedents and can be classified into three factors: individual, organizational, and leadership. As for consequences, it shows 6 consequences which also consist of digital literacy and competitive advantages apart from performance. Sectors that engage in IWB are predominantly telecommunication and manufacturing. It is hoped that IWB could expand to all sectors especially public sectors such as public services

    Influence of the type of phase change materials microcapsules on the properties of lime-gypsum thermal mortars

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    In a society with a high growth rate and increased standards of comfort arises the need to minimize the currently high energy consumption by taking advantage of renewable energy sources. The mortars with incorporation of phase change materials (PCM) have the ability to regulate the temperature inside buildings, contributing to the thermal comfort and reduction of the use of heating and cooling equipment, using only the energy supplied by the sun. However, the incorporation of phase change materials in mortars modifies its characteristics. The main purpose of this study was the production and characterization of mortars with incorporation of two different phase change materials. Specific properties of two phase change materials, such as particle size, shape and enthalpy, were determined, as well as the properties of the fresh and hardened state of the mortars. The proportion of PCM was 0%, 10%, 20% and 30% of the total mass of the solid particles. In order to minimize some problems associated with shrinkage and consequent cracking of the mortars, the incorporation of polyamide fibers and superplasticizer was tested. It was possible to observe that the incorporation of phase change materials in mortars caused differences in properties such as compressive strength, flexural strength and shrinkage. Even though the incorporation of PCM microcapsules resulted in an increase in the shrinkage, it was possible observe a significant improvement in mechanical properties.The authors wish to express their thanks to the Portuguese Foundation for Science and Technology, for funding the project PTDC/ECM/102154/2008, Contribution of Thermal Active Mortars for Building Energy Efficiency

    Multi-Objective Optimisation Framework for Designing Office Windows::Quality of View, Daylight and Energy Efficiency

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    This paper presents a new, multi-objective method of analysing and optimising the energy processes associated with window system design in office buildings. The simultaneous consideration of multiple and conflicting design objectives can make the architectural design process more complicated. This study is based on the fundamental recognition that optimising parameters on the building energy loads via window system design can reduce the quality of the view to outside and the received daylight – both qualities highly valued by building occupants. This paper proposes an approach for quantifying Quality of View in office buildings in balance with energy performance and daylighting, thus enabling an optimisation framework for office window design. The study builds on previous research by developing a multi-objective method of assessment of a reference room which is parametrically modelled using actual climate data. A method of Pareto Frontier and a weighting sum is applied for multi-objective optimisation to determine best outcomes that balance design requirements. The Results reveal the maximum possible window to wall ratio for the reference room. The optimisation model indicates that the room geometry should be altered to achieve the lighting and view requirements set out in building performance standards. The research results emphasise the need for window system configuration to be considered in the early design stages. This exploratory approach to a methodology and framework considers both building parameters and the local climate condition. It has the potential to be adopted and further refined by other researchers and designers to support complex, multi-factorial design decision-making

    Impact of opioid-free analgesia on pain severity and patient satisfaction after discharge from surgery: multispecialty, prospective cohort study in 25 countries

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    Background: Balancing opioid stewardship and the need for adequate analgesia following discharge after surgery is challenging. This study aimed to compare the outcomes for patients discharged with opioid versus opioid-free analgesia after common surgical procedures.Methods: This international, multicentre, prospective cohort study collected data from patients undergoing common acute and elective general surgical, urological, gynaecological, and orthopaedic procedures. The primary outcomes were patient-reported time in severe pain measured on a numerical analogue scale from 0 to 100% and patient-reported satisfaction with pain relief during the first week following discharge. Data were collected by in-hospital chart review and patient telephone interview 1 week after discharge.Results: The study recruited 4273 patients from 144 centres in 25 countries; 1311 patients (30.7%) were prescribed opioid analgesia at discharge. Patients reported being in severe pain for 10 (i.q.r. 1-30)% of the first week after discharge and rated satisfaction with analgesia as 90 (i.q.r. 80-100) of 100. After adjustment for confounders, opioid analgesia on discharge was independently associated with increased pain severity (risk ratio 1.52, 95% c.i. 1.31 to 1.76; P < 0.001) and re-presentation to healthcare providers owing to side-effects of medication (OR 2.38, 95% c.i. 1.36 to 4.17; P = 0.004), but not with satisfaction with analgesia (beta coefficient 0.92, 95% c.i. -1.52 to 3.36; P = 0.468) compared with opioid-free analgesia. Although opioid prescribing varied greatly between high-income and low- and middle-income countries, patient-reported outcomes did not.Conclusion: Opioid analgesia prescription on surgical discharge is associated with a higher risk of re-presentation owing to side-effects of medication and increased patient-reported pain, but not with changes in patient-reported satisfaction. Opioid-free discharge analgesia should be adopted routinely

    Intermittent Diplopia can be a Sentinel Sign of Impending Rupture of a Cerebral Aneurysm Compressing the Third Cranial Nerve

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    Intermittent Diplopia can be a Sentinel Sign of Impending Rupture of a Cerebral Aneurysm Compressing the Third Cranial Nerve

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    Intermittent diplopia with a normal neuro-ophthalmic examination is not generally considered adequate justification for a brain imaging study because the cause is most often a decompensated phoria. We present a patient who reported intermittent diplopia that evolved into a third nerve palsy and, within two days, rupture of a posterior communicating artery aneurysm

    Tussive Headache With Weakness and Atrophy of the Right Hand

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    Although headaches are a very common complaint, those accompanied by paresthesia and muscle wasting indicate an underlying neurological disorder. In this review, we present the case of a 58-year-old man with chronic headaches who developed tingling and numbness in his right limbs along with right-hand muscle atrophy

    Intravitreal ranibizumab in the management of acute central serous Chorioretinopathy

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    Purpose: To evaluate the efficacy of ranibizumab in hastening the recovery of acute CSCR when given immediately at time of diagnosis. Methods: In This retrospective case series, a total of 72 patients diagnosed with acute CSCR where reviewed, of which 63 received Ranibizumab at presentation. The patients were evaluated using Best corrected visual acuity, Ophthalmic examination, Optical coherence tomography (OCT) and fluorescein angiography, in addition to indocyanine green angiography and OCT angiography in some cases, at presentation, one week, one month and two months’ post injection. Results: From the total 72 patients diagnosed with acute CSCR, 63 of them received intravitreal ranibizumab and the remaining 9 patients preferred to go for observation. The mean age of patients was 41.2 year old. The ratio of male to female was 8:1. The mean BCVA at presentation was 6/15 on Snellen chart. All patients who received ranibizumab injection showed an improvement after 1 week, with a mean improvement in BCVA of two lines. Of them, 43 patients were back to BCVA of 6/6 after 2 months and showed complete resolution of sub retinal fluid. The remaining 20 patients showed an additional mean of improvement of one line (over the previous two lines) after the 2 months. Conclusion: Intravitreal ranibizumab hasten the recovery of both the BCVA and central macular thickness on OCT in acute CSCR when given immediately at presentation
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