New results from an extensive aging test on bakelite Resistive Plate Chambers

We present recent results of an extensive aging test, performed at the CERN Gamma Irradiation Facility on two single--gap RPC prototypes, developed for the LHCb Muon System. With a method based on a model describing the behaviour of an RPC under high particle flux conditions, we have periodically measured the electrode resistance R of the two RPC prototypes over three years: we observe a large spontaneous increase of R with time, from the initial value of about 2 MOhm to more than 250 MOhm. A corresponding degradation of the RPC rate capabilities, from more than 3 kHz/cm2 to less than 0.15 kHz/cm2 is also found.Comment: 6 pages, 7 figures, presented at Siena 2002, 8th Topical Seminar on Innovative Particle and Radiation Detectors 21-24 October 2002, Siena, Ital

Supersymmetric Dark Matter and the Energy of a Linear Electron-Positron Collider

We suggest that supersymmetric dark matter be used to set the energy scale of a linear $e^+ e^-$ collider. Assuming that the lightest supersymmetric particle (LSP) is a stable neutralino $\chi$, as in many incarnations of the MSSM with conserved R parity, previous calculations that include coannihilation effects have delineated the region of the $(m_{1/2}, m_0)$ plane where the LSP cosmological relic density lies in the preferred range 0.1 \la \Omega_{\chi} h^2 \la 0.3. We evaluate here the total cross section for $e^+ e^- \to$ visible pairs of supersymmetric particles, for different values of $m_{1/2}$ and $m_0$, and investigate how much of the dark matter region can be explored by $e^+ e^-$ colliders with different centre-of-mass energies $E_{CM}$. We find that a collider with $E_{CM} = 500$ GeV or 1 TeV can only explore part of the cosmological region, and that a collider with $E_{CM} = 1.5$ TeV with sufficient luminosity can explore all of the supersymmetric dark matter region

Hubungan Pengetahuan Ibu Tentang Gizi dengan Status Gizi Anaka Usia 1-3 Tahun

This study\u27s aims to determined the correlation of mother\u27s knowledge about children nutrition and nutritional status of 1-3 years old children. This study used a descriptive correlative design with cross sectional approach undertaken mother\u27s of children aged 1-3 years in the area of Community Health Center of Rejosari, Tenayan Raya Sail district Pekanbaru. The total samples were 98 respondent, taken using a cluster sampling technique by consideret the inclusion criteria. Measuring instrument used was a questionnaire that has been tested for validity and reliability along with scales. The analysis used univariate and bivariate by using pearson chi-square. The results showed a correlation between mother\u27s knowledge about children nutrition and nutritional status of 1-3 years old children (p value 0.004 < α 0.05). This study recommends to every health care proffesional to increases the mother\u27s knowledge about nutrition so they could improved nutritional status of their children

First results from an aging test of a prototype RPC for the LHCb Muon System

Recent results of an aging test performed at the CERN Gamma Irradiation Facility on a single--gap RPC prototype developed for the LHCb Muon System are presented. The results are based on an accumulated charge of about 0.45 C/cm$^2$, corresponding to about 4 years of LHCb running at the highest background rate. The performance of the chamber has been studied under several photon flux values exploiting a muon beam. A degradation of the rate capability above 1 kHz/cm$^2$ is observed, which can be correlated to a sizeable increase of resistivity of the chamber plates. An increase of the chamber dark current is also observed. The chamber performance is found to fulfill the LHCb operation requirements.Comment: 6 pages, 9 figures, presented at the International Workshop on Aging Phenomena in Gaseous Detectors'', DESY-Hamburg (Germany), October 200

Pregnant Women Empowerment in Improving Knowledge and Attitude on Delivery Method at Private Clinics in Medan City

Introduction : Pregnant women want a smooth labor and give birth to a baby perfectly. Practically, the way of delivery is 80% through vaginal birth and 20% labor caesarean section (CS). However, secular trend towards increased rates of labor CS almost worldwide. Safe delivery is the right of pregnant women, the empowerment of the training and mentoring of pregnant women to the labor elections with an indication of the effort to reduce non-medical CS needs to be done to improve the knowledge, attitudes choose childbirth. Material &amp; Methode : The study used a mixed method research method is quantitative and qualitative. Quantitative : quasi-experimental design with a sample of  25 pregnant women in the intervention group and 25 pregnant women in the control group. Qualitative : Rapid Assessment Procedure (RAP) and the analysis of the theme. Statistic Before the paired t test bivariat and not pairing done, first performed a test average of variable data. If the data still isn't normal (p value &lt; 0.050) Although data transformation has been done by way of a squared, diakar, and Log 10 then test the test become bivariat non parametric. In this research analysis used is the bivariat Wilcoxon. Results : Effect of empowering one for knowledge was 12.28 into 12.88 with p &lt;0.001 and empowerment 2, namely 12.88 into 15.56 with p value &lt;0.0001. Effect of empowerment one of the attitude that was 11.92 into 12.35 with p &lt;0.009, empowerment 2 was 12.35 into 15.28 with p value &lt;0.0001. changes in the value of the average knowledge before (pre-test 1 ^) and after (post-test 1 ^) is 10.08 into 11.56 with p &lt;0.0001, changes in the value of the average knowledge before (pre-test 1 ^) and after (post-test 1 ^) was 10.08 into 11.56 with p &lt;0.0001, the average value change attitudes before (pre-test 1 ^) 9.84 and after (post-test 1 ^) which became 11.72 with p value &lt;0.0001. Effect of empowerment for mothers childbirth obtained significance value (p = 0.001), with Exp (B) 14.636 means that the intervention group had an opportunity to choose a delivery vaginal birth was14 times greater compared with pregnant women in the control group. The quantitative findings are supported by the findings of qualitative expressions of pleasure and empowerment lucky followed by training and mentoring. Recommendation : Pregnant women feel the direct benefits of a normal delivery. Policies to adopt and use methods of empowerment with training and mentoring in the health center and Maternity Clinic. Keywords: Pregnant women, Empowerment, Knowledge and Attitude, Childbirth

Tanggung Jawab Sosial Perusahaan: Aktualisasi Ajaran Jaudatul Ada (Penyelesaian yang Baik) dalam Bisnis (Studi Kasus Bsm)

As a form of accountability for its economic activities, every company in the world must performCSR activities, including companies in Indonesia. Unfortunately, the values contained in current CSR reporting contain only secular activities, whereas Indonesia is a country with 200million Muslims who are entitled to use Islamic religious values in their lives that are includedin economic activities, including CSR. This study aims to find the appropriate Islamic valuesand can be applied in CSR activities. This study finds value in Islam that can be a referencecompany, in terms of this research is syariah bank, for CSR activities, namely the value ofJaudatul Ada (good settlement)