Association of chain of survival factors with out of hospital cardiac arrest survival in a region with low average population-density: a retrospective population-based cohort study

Background Out of hospital cardiac arrest (OHCA) has an average global survival rate to discharge of 8%. Chain of survival factors are heavily time-dependant and optimization can increase survival. Regions with low population density encounter challeges in providing optimal OHCA care. Nova Scotia's average population density is 17.4 persons per square kilometer in compasiron to Toronto with 4334.4 person per square kilometer. OHCAs have been described well in large urban centers globally, however the characterization of OHCA chain of survival in low density populations is sparse. Purpose To describe chain of survival factors and identify characteristics of survivors and non-survivors among those treated by paramedics in a low average density provincial population. Methods This was a retrospective cohort study of OHCAs responded to by paramedics. All OHCA responses with a cardiac etiology in Nova Scotia, Canada were included. Exclusion criteria were non-cardiac cause arrests, those with “do not resuscitate” (DNR) directives and expected deaths. The paramedic electronic patient care record was reviewed for demographic, bystander, out of hospital treatment and operational characteristics. Primary outcome was survival to hospital discharge. Descriptive statistics were calculated to describe differences between survivorship using Prism 8.0 (San Diego, CA) with alpha=0.05 applying unpaired, Mann-Whitney tests. Results Of 1517 OHCA, 463 were excluded leaving 1054 OHCA. Of these, 478 (45.3%) were treated by paramedics and included in this analysis. Most were men (67.2%; n=274) with a mean age 66.8 (±16.4). A total of 7.1% (n=75) survived to discharge with 76% of survivors (n=58) discharged home. Survivors were more likely to present with ventricular fibrillation than non-survivors (42.7% vs. 19.6%). Survivors compared to non-survivors had significantly shorter paramedic response time (8.1 vs. 10.7 min, P<0.001), paramedic time on scene (35.7 vs. 45.4 min, P=0.002), estimated time to paramedic defibrillation (13.2 vs 19.4 min, P<0.001), and estimated time to return of spontaneous circulation (ROSC) (22.9 vs 31.9min, P<0.001). Conclusion Links in the chain of survival are associated with survival from OHCA. OHCA survival is lower in the less densely populated province of Nova Scotia compared to studies in urban Canadian centers and worldwide. Our study is limited by the retrospective nature of data collection and lack of access to neurological outcomes. Even among survivors, EMS response is delayed compared to more densely populated centers. In Nova Scotia, longer paramedic response times are associated with decreased survival. Funding Acknowledgement Type of funding source: Other. Main funding source(s): Maritime Heart Center

Floristic Diversity and Carbon Stock in the Dry Forests of Chad

The woody flora of the National Park of Manda in the Sudanian area of Chad has been characterized between October and December 2016 to know its floristic diversity, and to quantify its aerial woody biomass. The transect and quadra method (1m x 1m) were simultaneously adopted for this study. The pan-tropical equation of Chave et al. made it possible to evaluate the carbon stocks in different sites. The study of the flora species identified 45 species divided into 37 genus and 21 families for an average population density of 355 individuals/ha. Three classes of the diameter dominate the settlement: class ≤ 10 cm; class of 10-20 cm and class of 20-30 cm. The height classes belong to the class of plants ≤ 4 m; and at last having a height ≤ 7 m. The basal area was 5.86 m2 / ha. It appears that the woody components store 23.82 ± 0.01 tC / ha, the undergrowth 0.14 ± 0.01 tC / ha and the litter 0.56 ± 0.01 tC / ha. This research is a contribution to the REDD+ process (Reducing Emissions from Deforestation and Forest Degradation).

Planned and rational management of the brown hare (Lepus europaeus Pallas,1778) population in Vojvodina region (Serbia) for the past 50 years (1967-2016)

Research on the percentage of young in the brown hare (Lepus europaeus Pall.) population in Vojvodina has been carried out since 1967 until 2016. The number of hare in this period ranged from minimum 154,990 individuals (with an average density of the population of 8,06) in 2014 to a maximum recorded in 1975 with 301,680 individuals (with an average population density of 15.10). An average number of hares recorded during annual spring counts was 265,070 with an average population density of 13.15 individuals per 100 ha. The average annual recorded cull was 40,495 hares (15.28% of spring hare count). For this period, each year in the Laboratory for Hunting, tests were carried out on hare (eye lens), and all hunting clubs were obliged to deliver samples in order to be given permission to hunt. In total, there were 9,648 samples, which on average for the 49-year research period amounted to 197. The largest number of samples was in 2009, when 300 hunting clubs, or two-thirds, delivered eye lenses to the laboratory for analysis. For the 1967-2015 period an average of 7,967 rabbits eye lenses (years 1971 and 1972 must be excluded with 605 and 587 eye lenses when a total hunting ban was made, and only hunting was carried out for scientific research). The average share of young for the observed period was 57.6%, with the minimum recorded in 2014 of 35.9% and a maximum of 70.3% in 1994. The reproductive index ranged from 1.09 to 2.33 rabbits per rabbit in 1994. The results of our research showed the diversity of selected population dynamics indicators for all hunting grounds in Vojvodina that were compared with similar research in Europe. Hunting, as shown, doesn't jeopardize the population, but other factors such as intensive soil cultivation with large agricultural plots and excessive use of pesticides followed by improper use.

Population Density on Types of Waste Disposal in Malang City

The population growth in Indonesia experiencing a very high development, causing population density. This study aims to know about environmental conditions, the density of population and waste disposal in Malang city and effect between population density and types of landfills. The method was an observational study using observation, questionnaire and closed interview guidelines. The results of this study were (1) the environmental conditions categorized good, (2) the average population density is 175,814 people per square km, (3) 63.33% respondents road throw domestic waste and not processed. (4) the population density variable does not influence the type of waste disposal.

Komunitas dan Preferensi Habitat Gastropoda pada Kedalaman Berbeda di Zona Litoral Danau Singkarak Provinsi Sumatera Barat

This research was conducted in Lake Singkarak from February to March 2016, using purposive sampling method in three locations namely Tanjung Mutiara, Malalo and Paninggahan, at a depth of 0.5 m, 1 m and 1.5 m in each location. Samples were collected using 30x30 cm2 surber net. The result showed four gastropod species from family of Thiaridae, namely Melanoides granifera, Melanoides tuberculata, Brotia costula and Thiara scabra. Average population density of gastropod in Lake Singkarak was 399.75 ind / m2. The population density at depths ranging from 271.11 to 568.89 ind/m2, the highest population density is showed at a depth of 1.5 m and the lowest at a depth of 0.5 m. Melanoides tuberculata shows highest density at all depths. M. granifera prefers habitats with a depth of 1.5 m, M. tuberculata prefers a depth of 1 m, T. scabra prefers a depth up to 1.5 m and B. Costula prefer habitat with a depth of 0.5 m. Condition of Lake Singkarak shows as favorable and suitable habitat for gastropod’s life.

Population and reproductive characteristics of the hermit crab Pagurus proximus Komai, 2000 (Decapoda: Anomura: Paguridae) in the northern part of the species range

The population and reproductive characteristics of the hermit crab Pagurus proximus Komai, 2000 have been examined in the northern part of the species range (Vostok Bay, Peter the Great Bay, Sea of Japan). The average population density was 4–5 ind m−2 in winter and spring, 10 ind m−2 in summer and autumn; the biomass was 7–9 and 18–19 g m−2, respectively. Hermit crabs were found at a depth of 0 to 12 m but were most numerous at about 3 m depth with an average population density of up to 26 ± 7 ind m−2. The shield length of males varied from 1.3 to 7.8 mm and females from 1.2 to 6.7 mm. The male to female ratio was close to 1 but varied with size and season. Females attained sexual maturity at a shield length of more than 1.3 mm. Ovigerous females were found from December to August. The proportion of ovigerous females increased from 7% in December to 93% in late April; however, the embryos in clutches remained at early developmental stage until May. The mass release of larvae was observed at the beginning of June. A subsequent spawning probably took place in July. The main factors contributing to the high abundance of P. proximus in the investigated area are the presence of the embryonic diapause synchronizing the release of larvae at the most favourable time for their development, high fecundity, the presence of at least two egg clutches during the reproductive season, and total absence of parasites.

UJI ADAPTASI VARIETAS UNGGUL BARU TERHADAP WERENG HIJAU DAN PENYAKIT TUNGRO DI KABUPATEN MERAUKE, PROVINSI PAPUA

<p><em><span class="fontstyle0">Tungro is one of the important diseases in rice plants caused by two types of viruses were rod virus (rice tungro bacilliform virus) and spherical virus (rice tungro spherical virus) that was transmitted by the green leafhopper (GLH) Nephotettix virescens. The purpose of this study to determine the adaptation of new improved varieties against GLH and tungro disease in Merauke, Papua Province. Research conducted at Tanah Miring District, Merauke, Papua Province between February and June 2010. The study was a randomized block design with three replications. The treatment consisted of 11 varieties, namely Inpari 1, Inpari 2, Inpari 3, Inpari 4, Inpari 5 Merawu, Inpari 6 Jete, Inpari 7 Lanrang, Inpari 8, Inpari 9 Elo, Inpari 10 Laeya, and Ciherang. Observations included the intensity of tungro and GLH population density at the age of rice plants of 1, 2, 3, and 4 weeks after planting (WAP). In addition, it was observed also the yield components of rice. The results showed that the GLH population density and the intensity of tungro disease was not significantly different at the 11 varieties tested. GLH attack had been found in 1 WAP with an average population density of 4.18 individual/20 single swing. GLH increases with the age of the rice crop with an average population density in 2 WAP (20 individual), 3 WAP (103.27 individual), and 4 WAP (154.15 individual) per 20 single swing. Tungro disease intensity in 11 varieties began were found in 3 WAP on average by 0.16% and increased at 4 WAP on average by 0.28%. Varieties significant effect on yield components such as plant height, panicle length, number of total grain/panicle, percentage of filled grain, 1000 grain weight and productivity except the number of panicles/clump. </span></em><span class="fontstyle2"><strong><span><br /> <!--[if !supportLineBreakNewLine]--><br /> <!--[endif]--></span></strong></span></p>

Population status, distribution and potential threats of the Blue Bull Boselaphus tragocamelus (Mammalia: Cetartiodactyla: Bovidae) along the Tinau River of Rupandehi District, Nepal

The status and conservation of the Blue Bull Boselaphus tragocamelus is becoming one of the prominent discourses of wildlife research. The study was carried out along the Tinau River at Rupandehi District in western Nepal to ascertain the population status, distribution and potential threats to the Blue Bull. The study was conducted along six transect lines in the forest. A total of 40 Blue Bulls were recorded in different transects. The average group size was five. The average population density was 0.228 Blue Bulls per ha and the sex ratio was 1 male: 3 females. The potential threats of the Blue Bull along the Tinau River were habitat destruction, overgrazing, conflict, flooding and accident.