Bis(μ-quinoline-2-carboxyl­ato)-κ3 N,O:O;κ3 O:N,O-bis­[(acetato-κ2 O,O′)(methanol-κO)lead(II)]

The dinuclear title compound, [Pb2(C10H6NO2)2(CH3COO)2(CH3OH)2], lies across an inversion center. The methanol-coordinated PbII atom is chelated by the acetate anion as well as by the quinoline-2-carboxyl­ate anion. One O atom of the quinoline-2-carboxyl­ate anion bridges two symmetry-related PbII atoms, forming the dinuclear compound. Aside from the six atoms connected to the PbII atom by regular coordination bonds, the structure features a long Pb⋯O inter­action [3.145 (3) Å] that gives rise to a distorted Ψ-square-anti­prismatic geometry at the metal center. The H atom of the methanol is hydrogen bonded to an O atom of the acetate

8-Hydr­oxy-2-methyl­quinolinium tetra­chlorido(quinolin-8-olato-κ2 N,O)stannate(IV) acetonitrile monosolvate

In the title solvated salt, (C10H10NO)[SnCl4(C9H6NO)]·CH3CN, the SnIV atom is chelated by the N,O-bidentate 8-hydroxy­quinolinate ligand and four chloride ions, generating a distorted SnONCl4 octa­hedral coordination geometry for the metal. In the crystal, the cations are linked to the anions and the solvent mol­ecules by O—H⋯O and N—H⋯N hydrogen bonds, respectively

Numerical modeling of sedimentation in the Sefid-Rood Reservoir, Iran

River morphodynamics and sediment transportSedimentation in reservoir

Super-simple (v,5,2)(v,5,2) directed designs and their smallest defining sets with its application in LDPC codes

In this paper, we show that for all $v\equiv 0,1$ (mod 5) and $v\geq 15$, there exists a super-simple $(v,5,2)$ directed design, also for these parameters there exists a super-simple $(v,5,2)$ directed design such that its smallest defining sets contain at least half of its blocks. Also, we show that these designs are useful in constructing parity-check matrices of LDPC codes.Comment: arXiv admin note: substantial text overlap with arXiv:1508.0009

First report of simultaneous assessment of hepatitis A virus and hepatitis E virus seroprevalence among soldiers in Iran

Hepatitis E virus (HEV) and Hepatitis A virus (HAV) have been considered as common causes of viral hepatitis to military service members since their discovery. Although Iran has been recognized as an endemic country for HAV and HEV there is no study about HAV and HEV simultaneous prevalence among Iranian soldiers. The purpose of this study was to assess anti-HAV and anti-HEV antibodies in Iranian soldiers concurrently. In this cross-sectional study, a total of 400 serum samples were collected by simple random sampling for detection of anti-HAV and anti-HEV IgG by commercial HEV enzyme-linked immunosorbent assay (ELISA) kit. Out of 400 individuals, all participants were male with ages ranging from 18 to 26 years. Totally, 12% and 0.5% of the tested specimens were positive for anti-HAV and anti-HEV respectively. There were no significant differences between the subjects grouped according to age groups. Our finding presented a dramatic decrease in seropositivity against HAV. Therefore, vaccination for HAV should be reevaluated for military services in Iran

Bis(acetato-κO)bis­(μ3-quinolin-8-olato-κ4 N,O:O:O)tetra­kis(μ2-quinolin-8-olato-κ3 N,O:O)tetra­zinc(II) dihydrate

In the centrosymmetric title compound, [Zn4(C9H6NO)6(C2H3O2)2]·2H2O, the ZnII atom that is bonded to one O atom of the acetate group is chelated by a quinolin-8-olate anion. This Zn atom is also bonded to the oxide O atoms of two other quinolin-8-olate anions, which themselves engage in chelation to the other ZnII atoms. The ZnII atom is five-coordinate in a square-pyramidal coordination geometry. The second ZnII atom is six-coordinate as it is linked to two oxide O atoms of the anions that chelate to the acetate-bound metal atom, and is chelated by two quinolin-8-olate ligands. The uncoordinated water mol­ecule is disordered over two positions in a 4:1 ratio. O—H⋯O hydrogen bonds between the water molecules and the free O atoms of the carboxylate groups consolidate the crystal packing

Predictors of under Five Years Old Diarrhoeal Disease in Mataniko Informal Settlements in Solomon Islands

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Seasonal Variation of Earthworm Abundances and Biomass in Natural Forests and Plantations (North of Iran)

Soil productivity and plant growth are usually affected by biological activities of earthworms. The objective of this study was a comparative evaluation of earthworm abundances in 20-year-old plantations of Alder, Oak, Maple and Cypress with the adjacent natural mixed broad-leaved deciduous forest in the Caspian region of Iran. In this research one sample plot, each 1 ha; was selected in every plantation as well as in the natural stand, more over, in each plot, 10 microsample plots 10?10m were selected random systematically. To determine the seasonal variation of density and biomass with two methods, twenty samples were taken from each microsample plot. In the first method, 10 assigned soil pits of 100?100 cm and 30 cm depth were located among each treatment and adult earthworms were collected by hand counting. In the second method, 10 circular soil samples of 81cm2 to depth of 30 cm were taken in each treatment. The larves of earthworm extracted by using Berlese funnel and were counted by binocular. Finally in four seasons a total of 400 specimens were taken from 50 microsamples in different treatments. Moreover, some site and treatment parameters were measured in each plot. The abundance and biomass of earthworms in the Cypress plantation with 148.4 (n/m2) and 4.74 (g/m2) was significantly lower than other treatments, while the differences between other treatments were not statistically significant. The two important factors were extracted from eight variables in Factore analysis. The analysis of FA showed that some treatment parameters and nutritional values of litter take an important role in seasonal variation of earthworm abundance at all the treatments

"Once you get cancer you die. There is no way to get saved from cancer." A qualitative exploration of patients' perceptions towards cancer in Fiji

YesUnderstanding patients' perspective to get an insight into cancer, and how best the public health systems can battle with this disease is the way forward in this current world. This study aimed to explore patients' knowledge about common cancers, barriers to assessing cancer information and cancer preventative approaches in Fiji. The study used a qualitative method approach that was conducted among patients who attended Special Outpatients (SOPD) at the four selected health centres in Lautoka Subdivision, Fiji from 1st March to 30th April 2021. A semi-structured open-ended questionnaire was used to guide in-depth interviews. These audio recordings were transcribed and analysed using thematic analysis. All interview transcripts were read and similar words and phrases were assigned numbers which were grouped together to identify themes and sub themes. Twenty-eight patients took part in the in-depth interview and the responses were grouped into four themes including; cancer knowledge, diagnosis of cancer in a close friend/family, barriers of communication and optimizing cancer awareness. Patients' awareness about common cancers and cancer risk factors was low. Many barriers for cancer screening were highlighted including stigmatization, fear, worry, death, lack of information, herbal medicine use, lack of resources and delay in diagnosis. Awareness strategies highlighted by participants included community outreach programs, house to house visits, opportunistic screening, engagement of community health care workers and the concept of a cancer hub centre. It is evident that there is a range of views from patients towards cancer and it is important to understand these perceptions to better guide public health interventions concerning cancer. This puts more focus on the need to invest more in information, education, and communication material for public campaigns that target a variety of people for a wider reach

Organizational preventative strategies undertaken by dental clinics in Fiji during COVID-19 Pandemic: A qualitative study

YesAim: This research aims to determine the organizational preventative strategies implemented by dental clinics in Fiji during the COVID-19 pandemic. Methods: This qualitative study was conducted amongst Dental Officers (Dos) and Dental Managers (DMs) who were working at government dental clinics, private dental clinics, and the School of Dentistry and Oral Health clinic (SDOH), in the Central Division, Fiji. A semi-structured open-ended questionnaire was used for data collection through in-depth interviews via zoom. A manual thematic analysis of the data was conducted. Results: Thirty Dos and 17 DMs participated in this study. 16 themes emerged from data analysis: Major Strategies implemented, Staff perception about strategies in place, Triaging and Screening, Hand hygiene, Waiting room changes, Operational Capacity, Universal precautions, Personal Protective Equipment (PPEs), Disinfection and decontamination protocols, Ventilation, Sterilization, Pre-procedural mouth rinse, Waste management, Vaccination status, Bubbles and Adaptation of Protocols. The Dos were generally satisfied with the strategies implemented by the DMs. The DMs along with other Dos had used various guidance documents to devise tailor-made ones suited for dental clinics in Fiji. Conclusion: Various strategies were adopted from several guidelines and tailor-made Standard Operating Procedures (SOPs) for each workplaces were developed by the various DMs. The majority of Dos were in favor of and satisfied with the protocols in place. Future research can be conducted in other divisions and include other health care professionals as well apart from just Dos and DMs