scholarly journals OPTIMASI CHANNEL XRD ARL9900 SEBAGAI METODE ALTERNATIF UNTUK ANALISA LIMESTONE DALAM SEMEN

2019 ◽  
Vol 17 (3) ◽  
Author(s):  
Sugeng Mulyono ◽  
Dzakiyatul Azizah ◽  
Hafit Setiyabudi

ABSTRACTLoss On Ignition (LOI) is one of the parameters of cement testing analysis to determine the percentage of substance lost from the sample in a certain time and temperature. LOI cement is mainly caused by loss of water and carbon dioxide content in CaCO3 (Calcite) carbonate compounds in Limestone at 950°C.From the results of this test can be predicted Limestone filler content in cement. Conventional methode of LOI is less efficient because need a relatively long time of about 2 hours and even more. The impact of this problem may lead to delays in production control decision making.The purpose of this research is to make LOI testing more efficient and also produced Calcite Curve as a secondary method for LOI testing. At PT Holcim Indonesia Laboratory there is Xray Fluorescence (XRF) instrument equipped with Xray Diffraction (XRD) channel which can be used for LOI analysis so that the testing process can be faster.The implementation method is made by making a correlation between Calcite with LOI and making Calcite calibration curve in channel XRD then sample tested.From the results of this research trials obtained LOI test results with XRD 7 minutes 34 seconds with accuration percentage is 44,67% and testing with wet method obtained 2 hours 27 minutes 57 seconds. From these results it can be concluded that LOI testing using XRD is 2 hours 20 minutes 23 seconds faster than wet method but not yet accurate. This method is still in the evaluation stage, it is necessary to repair to minimize percent error so that the test result more efficient and accurate, that is by modification of sample preparation or modification of Xray calibration parameter.Keywords: LOI, Calcite, Calibration curve, XRF, XRDABSTRAKLoss On Ignition (LOI) atau kandungan hilang pijar adalah salah satu parameter analisis pengujian semen untuk mengetahui persentase kandungan zat yang hilang dari sampel dalam waktu dan suhu tertentu. LOI semen terutama disebabkan oleh hilangnya kandungan air dan karbondioksida dalam senyawa karbonat CaCO3 (Calcite) dalam Limestone pada suhu 950oC. Berdasarkan hasil pengujian ini dapat diprediksi kadar Limestone filler dalam semen, karena bisa dihitung dari kandungan Calcite yang terdapat dalam Limestone filler.Metode konvensional pengujian LOI kurang efisien karena memerlukan waktu yang relatif lama yaitu sekitar 2 jam bahkan lebih. Dampak dari masalah ini bisa menyebabkan terjadinya keterlambatan dalam pengambilan keputusan kontrol produksi.Tujuan penelitian ini yaitu untuk membuat pengujian LOI menjadi lebih efisien dan juga dihasilkan Kurva Calcite sebagai metode alternatif untuk pengujian LOI. Di Laboratorium PT Holcim Indonesia terdapat instrument Xray Fluorescence (XRF) yang dilengkapi dengan channel Xray Diffraction (XRD) yang bisa dimanfaatkan untuk analisa LOI sehingga proses pengujiannya bisa lebih cepat.Metode pelaksanaan dibuat dengan cara membuat korelasi antara Calcite dengan LOI dan pembuatan kurva kalibrasi Calcite di channel XRD lalu dilakukan uji coba sampel.Berdasarkan hasil uji coba penelitian ini didapatkan hasil pengujian LOI dengan XRD 7 menit 34 detik dengan tingkat akurasi sebesar 44,67%, dan pengujian dengan metode wet didapatkan 2 jam 27 menit 57 detik. Dari hasil tersebut dapat disimpulkan bahwa pengujian LOI menggunakan XRD lebih cepat 2 jam 20 menit 23 detik dibandingkan dengan metode wet tetapi belum akurat. Metode ini masih dalam tahap evaluasi, diperlukan adanya perbaikan untuk meminimalisir persen error supaya hasil pengujian lebih efisien dan akurat, yaitu dengan cara modifikasi preparasi sampel atau modifikasi parameter kalibrasi Xray.Kata Kunci : LOI, Calcite, Kurva kalibrasi, XRF, XRD

2020 ◽  
Vol 58 (6) ◽  
Author(s):  
Antonios Kritikos ◽  
Julien Poissy ◽  
Antony Croxatto ◽  
Pierre-Yves Bochud ◽  
Jean-Luc Pagani ◽  
...  

ABSTRACT The 1,3-beta-d-glucan (BDG) test is used for the diagnosis of invasive candidiasis (IC) in intensive care units (ICUs). However, its utility for patient management is unclear. This study assessed the impact of BDG test results on therapeutic decisions. This was a single-center observational study conducted in an ICU over two 6-month periods. All BDG test requests for the diagnosis of IC were analyzed. Before the second period, the ICU physicians received a pocket card instruction (algorithm) for targeted BDG testing in high-risk patients. The performance of the BDG test for IC diagnosis was assessed, as well as its impact on antifungal (AF) prescription. Overall, 72 patients had ≥1 BDG test, and 14 (19%) patients had an IC diagnosis. The BDG test results influenced therapeutic decisions in 41 (57%) cases. The impact of the BDG test was positive in 30 (73%) of them, as follows: AF abstention/interruption following a negative BDG result (n = 27), and AF initiation/continuation triggered by a positive BDG test result and subsequently confirmed IC (n = 3). In 10 (24%) cases, a positive BDG test result resulted in AF initiation/continuation with no further evidence of IC. A negative BDG result and AF abstention with subsequent IC diagnosis were observed in one case. The positive predictive value (PPV) of BDG was improved if testing was restricted to the algorithm’s indications (80% versus 36%, respectively). However, adherence to the algorithm was low (26%), and no benefit of the intervention was observed. The BDG result had an impact on therapeutic decisions in more than half of the cases, which consisted mainly of safe AF interruption/abstention. Targeted BDG testing in high-risk patients improves PPV but is difficult to achieve in ICU.


2019 ◽  
Vol 178 (3) ◽  
pp. 71-75
Author(s):  
Piotr ORLIŃSKI ◽  
Marcin WOJS ◽  
Mateusz BEDNARSKI ◽  
Mieczysław SIKORA

The article presents the results of empirical research and their analysis regarding the impact of diesel oil and diesel oil mixture with bioethanol on coking the test injector nozzles of the XUD9 engine from PSA. The research included three fuel deals: diesel fuel as the base fuel and diesel oil mix with ONE10 bioethanol (10% bioethanol plus diesel oil (V/V)), ONE20 (20% bioethanol plus diesel oil (V/V)). They were conducted on the basis of CEC PF-023 developed by CEC (Coordinating European Council). Each of the above-mentioned fuels was tested using a new set of injectors. The propensity of the fuel for coking the injector tips was expressed as a percentage reduction in the air flow through the nozzles of each injector for the given sheer increments. The test result was the average percentage of airflow reduction for all nozzles at 0.1 mm spike increments and was measured according to ISO 4010 "Diesel engines. Calibrating nozzle, delay pintle type”. The test results for individual atomizers of the above-mentioned test engine in the area of sediment formation from flowing fuel shown a lower tendency to coke the injectors using diesel fuel-bioethanol in comparison to the use of pure diesel oil. Based on the CEC PF-023 test, it can be noticed that the level of contamination of the tested injectors for ONE10 fuel is about 3% lower, and for ONE20 fuel is about 4% lower than the level of pollution for diesel fuel.


2019 ◽  
Vol 17 (2) ◽  
pp. 49-60
Author(s):  
R. A. Ivanov ◽  
T. F. Valeev

For a long time, functional Java programming was not possible. However, lambda expressions appeared in version 8 of the Java language. Due to the support of standard library classes (Stream, Optional, etc.) in Java, it became possible to describe transformations over data in a functional style. Java is a rather old language with a large imperative code base written in it. In order to take advantage of the new approach, it is necessary to perform a non-trivial refactoring, which can be very tedious and error prone when applied manually. Fortunately, for a sufficiently large number of situations, this refactoring can be safely performed automatically. Using IntelliJ Idea as a platform software tool was developed that allows you to find places where it is possible to automatically convert an imperative code to an equivalent code that uses Stream API, as well as an automatic fix that allows you to make a replacement. Refactoring uses IntelliJ Idea framework to analyze Java code, and integrates into the IDE itself. One of the main criteria for the correct operation of the algorithm is the security of this transformation. The user cannot trust the tool if the transformation can change the semantics of the code. This article discusses various constraints that are imposed on code patterns so that transformation without distortion of semantics is possible. Refactoring has been tested in various libraries to verify the semantics are preserved by checking the test results before and after applying refactoring. This article will not describe the impact of using the Stream API on the performance of the application.


2016 ◽  
Vol 6 (4) ◽  
pp. 414
Author(s):  
Siti Sri Murni

This research is intended to analyze the impact of extrinsic and intrinsic motivation on the productivity of the manpower of permanent educational, specially of the Kopertis Wilayah VII Universities in Kotamadya Surabaya. Thefree variables of this research are extrinsic and intrinsic motivation, consisting of: (1). Income and incentive (X1); (2). Working condition (Xi); (3). Policy and administrati-on of the institution (X3); (4). Personal relationship (X4); (5). Supervision Quality (X5); (6). Achievement (Xf); (7). Accreditation 1 recognition (X7); (8). The work itself (XB); (9). Responsibilities (X9) and (J 0). Potential of individual improvement (X10}. Whereas non-free variables are productivity of the manpower of permanent educational (Y).This research use Analysis  of the Multiple Regression Linear,  and the test result of the first  hypothesis used simultaneously test (F-test) to permanent  educational rank Ill a, b, c and d, while the test of the second hypothesis implementing partial  test (t-test). The test results of the first and the second would be used as a base for the institution's decision making to reach the organizational success.  The respondents are male and female dosen Dpk. in the Teaching Staff of Nature science and Social science with total number of 80 lectures from   7 universities.   The  test  result  of  the  analysis  of  simultaneously  first hypothesis  (F-test) which assume that .free  variable motivation of extrinsic and intrinsic impact on non-free variable of productivity  of manpower of permanent  educational. Can be stated as followed:  F'o = 1,620 less than Ft = 1,90 with probabilities  = l 1,9 more than  level  of significant  (los.) 5%.  From  this result,  the  truth can 't be proved,  so extrinsic  and  intrinsic  motivation  of permanent   educational  do  not  affect  manpower productivity. With the result of R2 (R square)= 19, 01% it can mean variable motivation us model can  affect  the  manpower productivity  of permanent  educational  staff, only 19, 01% more and less 81% affected by variables cut of the model.The result of the I-test of the second hypothesis assumes that variable of the job itself (XB) is dominant ,  but  the result  of the analysis  of income  and  incentive  (X1)   is dominant; evidently  the  test  result  oft observation  = -  2,636  less  than  t  table -  -  1,986  and probability = 1, 04% less than its level of significant (los.) = 5%; with  test result  of partial coefficient determination (r2) = 9, 15% is the biggest to give contribution to the predictions of manpower permanent educational Kopertis Wilayah Vil in Surabaya , with regression coefficient (b1)  with negative sign running at -2,623.Considering the test result of the first  and second hypothesis whose is not consistent with the (expectation) assumption, so the institution where permanent educational work can take s teps by evaluating what obstacles to the improvement, then deciding the goal to success for permanent  educational and the institution. 


2002 ◽  
Vol 20 (2) ◽  
pp. 514-520 ◽  
Author(s):  
Marc D. Schwartz ◽  
Beth N. Peshkin ◽  
Chanita Hughes ◽  
David Main ◽  
Claudine Isaacs ◽  
...  

PURPOSE: Despite the increasingly widespread availability of BRCA1 and BRCA2 genetic testing, little is known about the psychologic impact of such testing in the clinical setting. The objective of this study was to examine the long-term psychologic impact of receiving BRCA1/2 test results within a clinic-based testing program. PATIENTS AND METHODS: The participants were 279 high-risk women who underwent genetic counseling and testing for alterations in the BRCA1/2 genes. At baseline (before genetic testing) and at 6 months after the disclosure of mutation status, we measured perceived risk for breast and ovarian cancer, cancer-specific distress, and general distress. We examined the impact of the test result on each of these outcomes at the 6-month follow-up. Analyses were conducted separately for probands and their relatives who were unaffected with cancer. RESULTS: We found no effect of test result among affected probands. Among unaffected relatives, we found that participants who received definitive negative test results exhibited significant reductions in perceived risk and distress compared with participants who received positive test results. Importantly, relatives who received positive test results did not exhibit increased distress or perceived risk. CONCLUSION: These results suggest that clinic-based BRCA1/2 testing can lead to psychologic benefits for individuals who receive negative test results. At 6 months after disclosure, those who receive positive or uninformative test results do not exhibit increased psychologic distress or perceived risk.


2014 ◽  
Vol 919-921 ◽  
pp. 800-804
Author(s):  
Zhuo Shi Chen ◽  
Xiao Ming Yuan ◽  
Shang Jiu Meng

The test results of shear-wave velocity in engineering are of being importance increasingly, but the the uncertainty of the wave test result has influenced the seismic design throughout. In order to describe this uncertainty accurately , the paper has taken some research on the deep-soft sites seismic response. By using SHAKE 2000 program and entering various types of ground motions, the authors discussed the effect of shear-wave velocity standard deviation of several velocity values in deep-soft site to the ground response spectra and PGA(Peak Ground Acceleration). The results are as followed: the standard deviation of the shear-wave velocities has almost no influence on the acceleration response spectra and the PGA of the site; the varieties of response spectra and PGA under different intensity of earthquake can be nearly ignored. With the increasing number of the shear-wave velocity data, results of the study would be further in-depth and perfection.


2020 ◽  
Vol 5 (1) ◽  
pp. 100-109 ◽  
Author(s):  
Deny Pradana Saputro ◽  
Muhammad Riski Adi Wijaya ◽  
Muhammad Fadli Dongoran

Management of physical test result for adolescent pencak silat category in the current state is done manually so that it is prone to make errors and takes a long time which causes the data processing of test results to be less effective and efficient. This study aims to determine the needs of trainers for software to managing the physical results of adolescent pencak silat fighting category. The research method used is descriptive. Subjects involved in this study amounted to 6 trainers with certified trainer criteria, had accompanied competing athletes and academics who possessed theoretical and practical pencak silat knowledge. Data collection using was a questionnaire. Data analysis used descriptive statistics. The results of this study show that: the trainer had held physical exercises and physical tests for pencak silat. Physical tests conducted use the composition of adolescent pencak silat test match category. To run a simple test process, a physical pencak silat physical test guide is needed, together with norms for the assessment of test results. The results of physical tests that have been carried out are used to evaluate physical conditions and determine the training program. In order for the process of managing physical test results to be more effective and efficient, it is necessary to obtain the software for processing the results of adolescent pencak silat physical tests in match category. The conclusion of this research is there is a need of software for managing the physical test results of adolescent pencak silat in the fighting category.


2019 ◽  
Vol 26 (4) ◽  
pp. 186-190
Author(s):  
Brandon Xian Ch’ng ◽  
Therese Mooney ◽  
Diarmuid O’Donoghue ◽  
Patricia Fitzpatrick

Objective Little research exists on what predicts individual return to screening after a false-positive faecal immunochemical test in a population bowel screening programme. We aimed to quantify the impact of false-positive faecal immunochemical test in the first round of screening on re-attendance in BowelScreen, the National Bowel Screening Programme in Ireland. Methods A retrospective cohort study was conducted. False-positivity was defined as a positive faecal immunochemical test with subsequent colonoscopy showing no evidence of malignancy or surveillance requirement. In those with a false-positive faecal immunochemical test, logistic regression was used to predict repeat participation in the second round. Results Of 196,149 individuals who attended the first screening round, 108,075 were eligible and re-invited in the second round, and 93,971 accepted the invitation (86.9%). Second round uptake was higher in faecal immunochemical test-negative individuals compared with those having false-positive results (87.5% vs. 73.1%; p < 0.001). Older age (odds ratio (OR) 0.75; 95% confidence interval (CI) 0.60–0.94), computed tomography colonography (unsuitability/failed colonoscopy) (OR 0.40; 95% CI 0.21–0.73), and longer duration from screening invitation to faecal immunochemical test result (OR 0.991; 95% CI 0.9872–0.995) were predictors of non-re-attendance in the next screening round. Conclusion There is a significant reduction in re-attendance rates for individuals with false-positive faecal immunochemical test results. The letter sent following a negative colonoscopy is being reviewed to ensure that it provides adequate encouragement to re-attend. There are roles for screening promotion and for Gastroenterologists and Advanced Nurse Practitioners to emphasize the importance of regular faecal immunochemical tests after a negative colonoscopy.


BMJ Open ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. e048946
Author(s):  
Camille Genecand ◽  
Denis Mongin ◽  
Flora Koegler ◽  
Dan Lebowitz ◽  
Simon Regard ◽  
...  

PurposeThe Actionable Register of Geneva Outpatients and inpatients with SARS-CoV-2 (ARGOS) is an ongoing prospective cohort created by the Geneva Directorate of Health. It consists of an operational database compiling all SARS-CoV-2 test results recorded in the Geneva area since late February 2020. This article aims at presenting this comprehensive cohort, in light of some of the varying public health measures in Geneva, Switzerland, since March 2020.ParticipantsAs of 1 June 2021, the database included 360 525 patients, among which 65 475 had at least one positive test result for SARS-CoV-2. Among all positive patients, 37.6% were contacted only once, 10.6% had one follow-up call, 8.5% had two and 27.7% had three or more follow-up calls. Participation rate among positive patients is 94%. Data collection is ongoing.Findings to dateARGOS data illustrates the magnitude of COVID-19 pandemic in Geneva, Switzerland, and details a variety of population factors and outcomes. The content of the cohort includes demographic data, comorbidities and risk factors for poor clinical outcome, self-reported COVID-19 symptoms, environmental and socioeconomic factors, prospective and retrospective contact tracing data, travel quarantine data and deaths. The registry has already been used in several publications focusing on symptoms and long COVID-19, infection fatality rate and re-infection.Future plansThe data of this large real-world registry provides a valuable resource for various types of research, such as clinical research, epidemiological research or policy assessment as it illustrates the impact of public health policies and overall disease burden of COVID-19.


2003 ◽  
Vol 21 (21) ◽  
pp. 4034-4041 ◽  
Author(s):  
Marc D. Schwartz ◽  
Elizabeth Kaufman ◽  
Beth N. Peshkin ◽  
Claudine Isaacs ◽  
Chanita Hughes ◽  
...  

Purpose: Despite the widespread availability of genetic testing for BRCA1/BRCA2 mutations, little is known about the impact of testing on ovarian cancer prevention and screening. For mutation testing to effect cancer mortality, positive test results must be followed by appropriate behavior change. In this study, we prospectively examined the impact of BRCA1/2 testing on the utilization of prophylactic oophorectomy and ovarian cancer screening. Participants and Methods: Participants were 289 high-risk women who underwent genetic counseling and testing for alterations in the BRCA1/2 genes. We measured self-reported receipt of bilateral prophylactic oophorectomy (BPO) and utilization of CA-125 and transvaginal ultrasound (TVU) in the year following testing, and examined the impact of test results on these outcomes. In addition, we examined the role of sociodemographic, medical, family history, and psychological variables on the receipt of BPO, CA-125, and TVU. Results: Twenty-seven percent of mutation carriers, 5% of uninformative patients, and 2% of noncarriers received a BPO in the year following testing. In addition to test results, perceived risk for ovarian cancer and family history of ovarian cancer independently predicted receipt of BPO. The receipt of a positive test result was associated with increased utilization of CA-125 and TVU. Additional predictors included perceived risk for ovarian cancer (both CA-125 and TVU) and state anxiety (CA-125). Conclusion: These results demonstrate the significant behavioral impact of receiving a positive BRCA1/2 test result. The increased rate of oophorectomy among mutation carriers suggests that testing for BRCA1/2 mutations may ultimately impact ovarian cancer mortality.


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