Microbial profile of ultrasonic cleaner water

It is necessary to clean glasses regularly. Glasses are often dirty due to attached dusts and contaminated microbe. Ultrasonic cleaner is often used effectively to clean the glasses. Therefore, the ultrasonic cleaner water contains contaminated microbe from glasses. This study aimed to identify bacteria and fungi yeast in the used ultrasonic cleaner water. For this study, glasses were cleaned with ultrasonic cleaner. Then, its water is inoculated at 3M Petrifilm for Escherichia coli, Staphylococcus aureus, and Candida albicans. The results showed that the most frequent Staphylococcus aureus and Candida albicans in the ultrasonic cleaner water. Escherichia coli was not often found.  Since both of microbe, S. aureus and C.albicans are flora normal of the skin, it can be concluded that glasses are contaminated with these flora normal of the skinPenting untuk membersihkan kacamata secara teratur. Kacamata sering kotor karena debu yang menempel dan mikroba yang terkontaminasi. Pembersih ultrasonik sering digunakan secara efektif untuk membersihkan kacamata. Oleh karena itu, air pembersih ultrasonik mengandung mikroba yang terkontaminasi dari gelas. Penelitian ini dapat mengidentifikasi khamir bakteri dan jamur pada air pembersih ultrasonik bekas pakai. Untuk penelitian ini, gelas dibersihkan dengan pembersih ultrasonik. Kemudian, airnya diinokulasi pada Petrifilm 3M untuk bakteri Escherichia coli, Staphylococcus aureus, dan Candida albicans. Hasil penelitian menunjukkan bahwa Staphylococcus aureus dan Candida albicans paling sering terdapat pada air pembersih ultrasonik. Escherichia coli tidak banyak ditemukan. Karena kedua mikroba, S. aureus dan C.albicans merupakan flora normal kulit, maka dapat disimpulkan bahwa kacamata terkontaminasi dengan flora normal kulit tersebut. &nbsp

Spatio-temporal distribution of the infestations of Coelaenomenodera lameensis Berti and Mariau (Coleoptera, Chrysomelidae) an oil palm tree (Elaeis guineensis Jacq.) pest in Toumanguié (Côte d’Ivoire)

Spatio-temporal distribution of Coelaenomenodera lameensis Berti and Mariau, 1999, pest of palm oil tree (Elaeis guineensis Jacquin, 1963) was carried out on 1226 ha of an industrial plantation at Toumanguié (south-east of Côte d’Ivoire). Temporal distribution of population established the existence, according to the years, of favorable periods of Coelaenomenodera lameensis infestations. Eight peaks of infestation were observed during 24 months. Infestation cycles proceeds each 90 days. Spatial distribution of the infestations revealed experimental plots having recorded between 0 and 8 months of infestation during the 2 years of investigation. This distribution proved to be independent of the age of the plots. Infestations were also independent of abiotic factors (rainfall, temperature and relative humidity). Larvae at stages 1, 2, 3 and 4 are mostly responsible of the damages observed in the fields.Key words: Coelaenomenodera lameensis; Elaeis guineensis; spatio-temporal distribution; Côte d’Ivoir

FAKTOR-FAKTOR YANG BERHUBUNGAN DENGAN PEMBERIAN ASI EKSKLUSIF DI PUSKESMAS BUHIT SAMOSIR TAHUN 2023

Breast milk is the ideal nutrition for babies which contains nutrients that are best suited to the needs of babies as well as protective substances to fight disease. The success of exclusive breastfeeding is influenced by many factors. The aim of the research is to find out the factors related to exclusive breastfeeding at Buhit Samosir Health Center in 2023. Quantitative research method with a cross sectional approach. The research was carried out at the Buhit Samosir Health Center in November 2022-July 2023. The study population was 30 people, the total sampling technique was 30 people. Bivariate analysis of chi-square test and multivariate multiple logistic regression test. The results of the study showed that 10 people (33.3%) who gave exclusive breastfeeding were mostly 25-35 years old and 17 people (56.7%) who did not exclusively breastfeed were 25-35 years old. The majority of breastfeeding mothers have good knowledge (score 23-30) of 24 people (80%), the majority of mothers who give exclusive breastfeeding have good knowledge (score 23-30) of 8 people (26.7%) and the majority of mothers who do not give exclusive breastfeeding good knowledge (score 23-30) as many as 16 people (53.3%). The majority of breastfeeding mothers have a fairly good attitude (score 49-55) as many as 15 people (50%), the majority of mothers who give exclusive breastfeeding have a good attitude (score 56-75) as many as 5 people (16.7%) and the majority of mothers who do not exclusively breastfeed attitude is quite good (score 49-55) as many as 12 people (40%). The majority of breastfeeding mothers had no history of illness as many as 22 people (73.3%), the majority of mothers who gave exclusive breastfeeding had no history of illness as many as 11 people (36.7%) and mothers who were not exclusively breastfed the majority had no history of disease as many as 11 people ( 36.7%). The majority of breastfeeding mothers with first parity gave birth or parity > 4 as many as 18 people (60%), the majority of mothers who gave exclusive breastfeeding with first parity gave birth or parity > 4 as many as 7 people (23.3%) and mothers who were not exclusively breastfed the majority with first parity gave birth or parity> 4 as many as 11 people (36.7%). The dominant factor in exclusive breastfeeding is the attitude factor with a significance value of 0.001 <0.005.  Keywords: Exclusive breastfeeding, age, knowledge, attitudes, medical history, parit

Population Hemoglobin Mean and Anemia Prevalence in Papua New Guinea: New Metrics for Defining Malaria Endemicity?

The hypothesis is that hemoglobin-based metrics are useful tools for estimating malaria endemicity and for monitoring malaria control strategies. The aim of this study is to compare population hemoglobin mean and anemia prevalence to established indicators of malaria endemicity, including parasite rates, rates of enlarged spleens in children, and records of (presumptive) malaria diagnosis among populations living with different levels of malaria transmission. Convenience sample, multisite cross-sectional household surveys conducted in Papua New Guinea. Correlations (r(2)) between population Hb mean and anemia prevalence and altitude, parasite rate, and spleen rate were investigated in children ages 2 to 10 years, and in the general population; 21,664 individuals from 156 different communities were surveyed. Altitude ranged from 5 to 2120 meters. In young children, correlations between altitude and parasite rate, population Hb mean, anemia prevalence, and spleen rate were high (r(2): -0.77, 0.73, -0.81, and -0.68; p<0.001). In the general population, correlations between altitude and population Hb mean and anemia prevalence were 0.83 and 0.85, respectively. Among young children, parasite rate correlated highly with anemia prevalence, population Hb mean, and spleen rate (r(2): 0.81, -0.81, and 0.86; p<0.001). Population Hb mean (corrected for direct altitude effects) increased with altitude, from 10.5 g/dl at <500 m to 12.8 g/dl at >1500 m (p<0.001). In PNG, where Plasmodium vivax accounts for an important part of all malaria infections, population hemoglobin mean and anemia prevalence correlate well with altitude, parasite, and spleen rates. Hb measurement is simple and affordable, and may be a useful new tool, alone or in association with other metrics, for estimating malaria endemicity and monitoring effectiveness of malaria control programs. Further prospective studies in areas with different malaria epidemiology and different factors contributing to the burden of anemia are warranted to investigate the usefulness of Hb metrics in monitoring malaria transmission intensity

Mutant MYO1F alters the mitochondrial network and induces tumor proliferation in thyroid cancer

Familial aggregation is a significant risk factor for the development of thyroid cancer and Familial Non-Medullary Thyroid Cancer (FNMTC) accounts for 5-7% of all NMTC. Whole Exome Sequencing analysis in the family affected by FNMTC with oncocytic features where our group previously identified a predisposing locus on chromosome 19p13.2, revealed a novel heterozygous mutation (c.400G>A, NM_012335; p.Gly134Ser) in exon 5 of MYO1F, mapping to the linkage locus. In the thyroid FRTL-5 cell model stably expressing the mutant MYO1F p.Gly134Ser protein we observed an altered mitochondrial network, with increased mitochondrial mass and a significant increase of both intracellular and extracellular Reactive Oxygen Species, compared to cells expressing the wild-type protein or carrying the empty vector. The mutation conferred a significant advantage in colony formation, invasion and anchorage independent growth. These data were corroborated by in vivo studies in zebrafish, since we demonstrated that the mutant MYO1F p.Gly134Ser, when overexpressed, can induce proliferation in whole vertebrate embryos, compared to the wild-type one. MYO1F screening in additional 192 FNMTC families identified another variant in exon 7, which leads to exon skipping, and is predicted to alter the ATP-binding domain in MYO1F. Our study identified for the first time a role for MYO1F in NMTC. This article is protected by copyright. All rights reserved

The Effects of Air Flow in the Wake of a Large Vehicle on Trailing a Passenger Car

Road driving condition under drafting is known to have an influence on the aerodynamic forces of the vehicle. Large vehicles such as busses and trucks traveling at high speeds give results in the formation of a large turbulent flow in the wake region. This turbulent flow is very unsteady in nature hence its influence on the air flow within its vicinity will also be unsteady. This paper investigates the relative values of drag and lift forces acting on a passenger car trailing a large vehicle (drafting) under unsteady conditions. The simulation is conducted using Computational Fluid Dynamics software, FLUENT for a two-dimensional flow domain at Re 3.18x106 for a trailing distance of 0 to 30 meters. The unsteady effect is studied at 15 time intervals for each time step. Turbulence is simulated using the Reynolds-Average Navier Stokes (RANS) k-ε model. Results show that aerodynamically, the critical drafting distance is between three to five meters where the lowest drag is found to occur at three meters. The results show the suitable distance for drafting which may serve as useful information for vehicle fuel economy and stability

Coexistence of Magnetic Order and Two-dimensional Superconductivity at LaAlO3_3/SrTiO3_3 Interfaces

A two dimensional electronic system with novel electronic properties forms at the interface between the insulators LaAlO$_3$ and SrTiO$_3$. Samples fabricated until now have been found to be either magnetic or superconducting, depending on growth conditions. We combine transport measurements with high-resolution magnetic torque magnetometry and report here evidence of magnetic ordering of the two-dimensional electron liquid at the interface. The magnetic ordering exists from well below the superconducting transition to up to 200 K, and is characterized by an in-plane magnetic moment. Our results suggest that there is either phase separation or coexistence between magnetic and superconducting states. The coexistence scenario would point to an unconventional superconducting phase in the ground state.Comment: 10 pages, 4 figure

The non-Abelian gauge theory of matrix big bangs

We study at the classical and quantum mechanical level the time-dependent Yang-Mills theory that one obtains via the generalisation of discrete light-cone quantisation to singular homogeneous plane waves. The non-Abelian nature of this theory is known to be important for physics near the singularity, at least as far as the number of degrees of freedom is concerned. We will show that the quartic interaction is always subleading as one approaches the singularity and that close enough to t=0 the evolution is driven by the diverging tachyonic mass term. The evolution towards asymptotically flat space-time also reveals some surprising features.Comment: 29 pages, 8 eps figures, v2: minor changes, references added: v3 small typographical changes

Photonic quantum state transfer between a cold atomic gas and a crystal

Interfacing fundamentally different quantum systems is key to build future hybrid quantum networks. Such heterogeneous networks offer superior capabilities compared to their homogeneous counterparts as they merge individual advantages of disparate quantum nodes in a single network architecture. However, only very few investigations on optical hybrid-interconnections have been carried out due to the high fundamental and technological challenges, which involve e.g. wavelength and bandwidth matching of the interfacing photons. Here we report the first optical quantum interconnection between two disparate matter quantum systems with photon storage capabilities. We show that a quantum state can be faithfully transferred between a cold atomic ensemble and a rare-earth doped crystal via a single photon at telecommunication wavelength, using cascaded quantum frequency conversion. We first demonstrate that quantum correlations between a photon and a single collective spin excitation in the cold atomic ensemble can be transferred onto the solid-state system. We also show that single-photon time-bin qubits generated in the cold atomic ensemble can be converted, stored and retrieved from the crystal with a conditional qubit fidelity of more than $85\%$. Our results open prospects to optically connect quantum nodes with different capabilities and represent an important step towards the realization of large-scale hybrid quantum networks