Generalized WDVV equations for B_r and C_r pure N=2 Super-Yang-Mills theory

A proof that the prepotential for pure N=2 Super-Yang-Mills theory associated with Lie algebras B_r and C_r satisfies the generalized WDVV (Witten-Dijkgraaf-Verlinde-Verlinde) system was given by Marshakov, Mironov and Morozov. Among other things, they use an associative algebra of holomorphic differentials. Later Ito and Yang used a different approach to try to accomplish the same result, but they encountered objects of which it is unclear whether they form structure constants of an associative algebra. We show by explicit calculation that these objects are none other than the structure constants of the algebra of holomorphic differentials.Comment: 8 page

Efficacy of Two Common Methods of Application of Residual Insecticide for Controlling the Asian Tiger Mosquito, Aedes albopictus (Skuse), in Urban Areas

After its first introduction in the 1980's the Asian tiger mosquito, Aedes albopictus (Skuse), has spread throughout Southern Europe. Ae. albopictus is considered an epidemiologically important vector for the transmission of many viral pathogens such as the yellow fever virus, dengue fever and Chikungunya fever, as well as several filarial nematodes such as Dirofilaria immitis or D. repens. It is therefore crucial to develop measures to reduce the risks of disease transmission by controlling the vector populations. The aim of the study was to compare the efficacy of two application techniques (mist vs. stretcher sprayer) and two insecticides (Etox based on the nonester pyrethroid Etofenprox vs. Microsin based on the pyrethroid type II Cypermetrin) in controlling adult tiger mosquito populations in highly populated areas. To test the effect of the two treatments pre- and post-treatment human landing rate counts were conducted for two years. After one day from the treatment we observed a 100% population decrease in mosquito abundance with both application methods and both insecticides. However, seven and 14 days after the application the stretcher sprayer showed larger population reductions than the mist sprayer. No effect of insecticide type after one day and 14 days was found, while Etox caused slightly higher population reduction than Microsin after seven days. Emergency measures to locally reduce the vector populations should adopt adulticide treatments using stretcher sprayers. However, more research is still needed to evaluate the potential negative effects of adulticide applications on non-target organisms

Iron Emission in the z=6.4 Quasar SDSS J114816.64+525150.3

We present near-infrared J and K-band spectra of the z = 6.4 quasar SDSS J114816.64+525150.3 obtained with the NIRSPEC spectrograph at the Keck-II telescope, covering the rest-frame spectral regions surrounding the C IV 1549 and Mg II 2800 emission lines. The iron emission blend at rest wavelength 2900-3000 A is clearly detected and its strength appears nearly indistinguishable from that of typical quasars at lower redshifts. The Fe II / Mg II ratio is also similar to values found for lower-redshift quasars, demonstrating that there is no strong evolution in Fe/alpha broad-line emission ratios even out to z=6.4. In the context of current models for iron enrichment from Type Ia supernovae, this implies that the SN Ia progenitor stars formed at z > 10. We apply the scaling relations of Vestergaard and of McLure & Jarvis to estimate the black hole mass from the widths of the C IV and Mg II emission lines and the ultraviolet continuum luminosity. The derived mass is in the range (2-6)x10^9 solar masses, with an additional uncertainty of a factor of 3 due to the intrinsic scatter in the scaling relations. This result is in agreement with the previous mass estimate of 3x10^9 solar masses by Willott, McLure, & Jarvis, and supports their conclusion that the quasar is radiating close to its Eddington luminosity.Comment: To appear in ApJ Letter

Status Resistensi Larva Aedes Aegypti (Linnaeus) terhadap Temephos (Studi di Kelurahan Jatiasih Kecamatan Jatiasih Kota Bekasi Provinsi Jawa Barat)

Larvacides temephos has long been used in vector control of DHF Ae. aegypti. The use of insecticides for a long time and continuously can increase the incidence of insecticide resistance. The aim of this research is to determine the resistance status of Ae. aegypti in Jatiasih Village to temephos. This research includes the study of pure experimentation (True Experiment) to posttest design with control group (Only posttest control group design) with a sample of Ae.aegyptiinstar III and instar IV larval rearing the results of the first generation of larvae survey results. The results showed the percentage of larval mortality Ae. aegypti of Village Jatiasih to temephos by using a concentration of 0.0025 mg/l; 0.005 mg/l; 0.01 mg/l; 0.02 mg/l; 0.04 mg/l and 0.08 mg/l. According to WHO's recommended concentration category of 0,02 mg/l showed that village Jatiasih is still susceptible to temephos with the death of Ae. aegypti by 98%. The analysis of the data was tested by using Kruskal Wallis test and Mann Whitney Test to determine the differences in each concentration. Kruskal Wallis test was obtained on the value of 0.001 (

Hubungan Faktor Host (Umur 6 Bulan-14 Tahun) dan Keberadaan Vektor dengan Kejadian Demam Berdarah Dengue di Wilayah Kerja Puskesmas Kedungmundu Semarang Relationship Of Host Factors (Ages 6 Months - 14 Years) And Existence Vector With Dengue Hemorrhagic

Semarang city is endemic regions, with the highest incidence rate in the District Tembalang in 2014 (IR = 110.55 for 100.000 in population). Case of DHF in Kedungmundu Primary Health Service was just happen 2014 which amount 154 cases with 86% of cases in the age group of 6 months-14 years. The purpose of this study was to determine the relationship of host factors (age 6 months-14 years) and the existence of the vector with the incidence of DHF in Kedungmundu Primary Health Service Semarang. This type of research was quantitative with a case control approach. Total sample was 104 samples. Analysis of data using chi-square test. The results of this research showed that there were association using mosquito repellent (p=0.003), history of DHF illness (p=0.008), and the existence of larva (p=0.0001) with incidence of DHF. Meanwhile, there were no relationship habit of sleeping morning/noon (p=0.430), habit of sleeping afternoon (p=0.691), habit of hanging clothes (p=0.316), using of mosquito nets (p=0.339), and nutritional status (p=0.150) with incidence of DHF. It was advisable for the community to increase efforts to improve activities mosquito nest eradication (PSN), and for Kedungmundu Primary Health Service to increase efforts to control DHF, for example regular larva monitoring and thorough

Peranan Perempuan Pada Pembangunan Ekonomi Dalam Perspektif Gender Di Kabupaten Badung

The main objective of this study is to investigate the role of women in economic development in a gender perspective. Data collected by survey techniques in several government agencies in Badung . Data analysis was done by narrating in full of analyze qualitative interpretations in accordance with the real conditions in society. The study found gender inequality still occur on several indicators, among others, labor force participation of women are much lower than men in economic development. So as to increase the role of women in economic development efforts should be made of the parties involved, especially employers to provide opportunities and recruitment fair, male or female according to the needs.