Wet Type Research Articles

Effect of stocking conditions on fatty acid composition and oxidation capacities of different class and type dog food

The aim of this study was the determination of changes in the fatty acid profile, oxidation parameters [peroxide value (PV), and malondialdehyde (MDA)] of wet and dry types of premium (PC) and economic class (EC) commercial dog foods at different stocking temperatures (+4 °C, +21 °C, +40 °C) and different stocking times (1, 3, 6, and 12 months). At the time of purchase, the PV and MDA concentrations of dry type foods were lower than those of wet type foods (p < .001). At the time of purchase, MDA concentrations in wet types of EC dog foods were higher than those of wet types of PC dog foods (p < .05). The contents of docosahexaenoic (DHA) and oleic acids in PC dog foods, at the time of purchase, were higher than those of EC dog foods (p < .05). The MDA and PV concentrations of dog food increased with the progress of stocking times at increasing temperatures (p < .05). In the 12th month of stocking, eicosapentaenoic acid (EPA)+DHA contents decreased by up to 13% in PC dog foods and 50% in EC dog foods. The EPA + DHA contents reduced up to 33% in dry types and 36% in wet types of dog foods. As a result, all the classes and types of dog foods, which were stocked at +4 °C, +21 °C, or +40 °C for up to 3 months, had no significant changes in PV, but it may be recommended to stock for up to 12 months at +4 °C to preserve the existing oxidation capacity and essential fatty acid profile. Highlights The PV and MDA concentrations of dry type dog foods at the time of purchase were lower than those of wet type dog foods. The contents of α-linolenic and linoleic acid in dry types of EC foods up to 12 months stocking were below the minimum limits in dog food as recommended by international authorities. Stocking dog food at +40 °C for up to 3 months, did not have a significant effect on lipid peroxidation, but it may be recommended to stock for up to 12 months at +4 °C.

Monitoring of the Effects of Dry and Wet Dust Removal Equipment at a Coal Port Transfer Station

Dust removal technology in port transfer station is divided into dry and wet types. Based on the monitoring data of a professional coal port, this paper compares the dust removal rates of dry and wet dust removal equipment in transfer station. The monitoring results show that the dust suppression rate of wet dust removal equipment in port transfer station is nearly twice of dry dust removal equipment. The results of this paper can provide a reference for the dust removal scheme decision of dry bulk cargo terminal transfer station.

Therapeutic Options Under Development for Nonneovascular Age-Related Macular Degeneration and Geographic Atrophy.

Age-related macular degeneration (AMD) is a chronic, multifactorial disease and a leading cause of irreversible blindness in the elderly population in the Western Hemisphere. Among the two major subtypes of AMD, the prevalence of the nonneovascular (dry) type is approximately 85-90% and the neovascular (wet) type is 10-15%. Healthy lifestyle and nutritional supplements of anti-oxidative micronutrients have been shown to delay the progression of dry AMD and lower the risk of development of wet AMD, and anti-vascular endothelial growth factor (anti-VEGF) injections have been shown to improve visual acuity for wet AMD patients. However, to date, there is no approved treatment for geographic atrophy (GA), a debilitating late stage of dry AMD. Thus, this represents a large unmet need in this patient population. This review focuses on the current management and treatment of nonneovascular AMD, the drugs and devices that have been under investigation for the treatment of GA, and the latest clinical trial results. A few therapeutic options have shown initial promising clinical trial results, but failed to show efficacy in larger trials, while others are awaiting future clinical trial results and long-term follow-up to evaluate safety and efficacy.

Mass stabilization as a modern method of substrate strengthening

The aim of the paper is to show one of the soil strengthening technologies - mass mixing. Two variations are to be distinguish – dry and wet type. In the first case the binding process take place with the use of ground water and the binder (cement, fly ash). In wet mass mixing the soil; is mixed with cement or cement-fly ash grout. The application of each type is dependent of the type of soil and its moisture content. The paper describes case studies of dry type: S5 road in the section Korzeńsko – Widawa, open pool complex in Oława, Szczecinek bypass. Wet type case study is described as well – part of the “Wiślanka” gallery in Żory and site in Warsaw. The analysis of mentioned case studies has shown that the technology can be used in all type of civil engineering objects. While it is one of the technologies which is based on mixing of the existing soil, it is especially important to do comprehensive soil investigation and trial mixes before the start of the jobsite. One of the advantages is that the quality control in case of wet mass mixing is made similarly to DSM (deep soil mixing).

A Review of Seismic Response of Precast Structures

Precast construction has received increasing attention during the past decades. Faster construction, higher quality, and relatively lower construction cost are among the main benefits of precast structures. However, poor seismic performance has been observed for precast structures during past earthquakes. This paper reviews the seismic-induced damage to the precast structures during past earthquakes and presents existing precast buildings' seismic vulnerability studies. The focus of this paper is on the seismic performance of beam-to-column precast joints. The review also includes the recent advancement in the development of wet and dry type precast beam-to-column connections.

Assessment of the outcome of myringoplasty with cortical mastoidectomy in dry and wet mucosal type of chronic otitis media

&lt;p class="abstract"&gt;&lt;strong&gt;Background:&lt;/strong&gt; Chronic otitis media (COM) is an inflammatory process in the middle ear space that results in long-term changes in the tympanic membrane including atelectasis, dimeric-membrane formation, perforation, tympanosclerosis, retraction pocket or cholesteatoma. COM can be classified into healed, inactive (mucosal or squamosal), active (mucosal or squamosal). Myringoplasty is tympanoplasty without ossicular reconstruction. Cortical mastoidectomy is usually accompanied by tympanoplasty. Aim was to assess and compare the efficacy of myringoplasty with cortical mastoidectomy in dry and wet mucosal type of COM, in terms of graft uptake and hearing improvement.&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Methods:&lt;/strong&gt; A prospective study, where 30 patients each of wet and dry mucosal-type COM were included. Patients underwent myringoplasty with cortical mastoidectomy. All were followed up for 6 months, both the groups were statistically compared. &lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Results:&lt;/strong&gt; In our study, mean age of patients in group A (wet COM) was 34.13 years and group B (dry COM) was 33.36 years. Group A had success rate of 90% and group B had success rate of 86.6%. There was no statistical significance (p value- 0.53) on comparing both groups with respect to graft uptake. There was significant hearing improvement post-operatively in both the groups (p&amp;lt;0.05). However, there was no significant difference between the groups (p value- 0.66). This shows that presence of discharge at the time of surgery does not interfere with the results of cortical mastoidectomy with myringoplasty.&lt;/p&gt;&lt;p class="abstract"&gt;&lt;strong&gt;Conclusions:&lt;/strong&gt; We conclude that, there is good outcome in both wet and dry COM following myringoplasty with cortical mastoidectomy with respect to graft uptake and hearing improvement.&lt;/p&gt;

Wettability of thermoplastic and thermoset polymers with carbon nanotube grafted carbon fiber

In this experimental study the wetting behavior of unsized and carbon nanotube (CNT) grafted carbon fibers is assessed with various polymers. Thermoset epoxy and two thermoplastics (polypropylene and polycarbonate) are tested. Sessile drop method and drop-on-fiber method are employed to quantify the wettability of various fiber/polymer combinations. Contact angle measurements based on the above two methods give insights into the effectiveness of various polymers to wet different types of carbon fiber fabrics and single fiber filaments. Moreover, the effect of CNT length and density on the wettability of carbon fibers is ascertained by synthesizing nanotubes on the fiber surface for varying time durations (10–30 min). CNT grafting reduces the contact angle of the polymer drop with carbon fiber; however, too much growth of nanotubes on the fiber surface leads to improper impregnation of the polymer into the carbon fabric. While polypropylene shows better wetting characteristics with unsized and CNT grafted carbon fibers, polycarbonate shows poor wettability.

Atmospheric Circulation as a Factor Contributing to Increasing Drought Severity in Central Europe

AbstractLong‐lasting and severe droughts seriously threaten agriculture, ecosystems, and society. Summer 2018 in central Europe was characterized by unusually persistent heat and drought, causing substantial economic losses, and became a part of a several years long dry period observed across this region. This study assesses the magnitude of the recent drought within a long‐term context and links the increased drought severity to changes in atmospheric circulation. Temporal variability of drought conditions since the late 19th century was analyzed at seven long‐term stations distributed across the Czech Republic using the Palmer Drought Severity Index and the Standardized Precipitation Evaporation Index. The Palmer Z Index and a variation of the Standardized Precipitation Evaporation Index were used to study rapidly emerging short‐term droughts and to link these episodes to atmospheric circulation. Changes in circulation were analyzed through circulation types calculated from flow strength, direction and vorticity in mean sea level pressure data from the National Centers for Environmental Prediction (NCEP)/National Center for Atmospheric Research (NCAR) reanalysis for 1948–2018. Increasing drought severity across the Czech Republic with record‐low values of the drought indices during 2015–2018 was found. The trend was distinctive in both vegetation (April–September) and cold (October–March) periods. The tendency toward more severe droughts in recent decades was linked to changes in frequency of dry and wet circulation types, highlighting the important role of atmospheric circulation in regional climate. It remains an open question whether the significantly increasing frequency of dry circulation types in the vegetation period is related to climate change, or rather represents multidecadal climate variability.

Rusty Blackbirds select areas of greater habitat complexity during stopover

Abstract The Rusty Blackbird (Euphagus carolinus) is a widespread, uncommon migrant that has experienced heavy population declines over the last century. This species can spend over a quarter of their annual cycle on migration, so it is important to determine their habitat requirements during stopover events to inform effective conservation planning. We assessed their habitat selection at an important stopover site in northern Ohio during both fall and spring migration. Since stopover habitat selection is scale-dependent, we investigated both patch-scale (between patches) and fine-scale (within a patch) selection using radio telemetry to locate foraging and roosting flocks, and compared habitat variables between used and available points across the study site. At the patch scale, we found that birds preferred dogwood–willow swamp, low-lying forest patches, and areas of greater habitat complexity for foraging in both seasons. At the fine scale, spring migrants foraged closer to habitat edges than random, and preferred areas with more wet leaf litter and shallow water, and less grass cover. Fall migrants also preferred shallow water and leaf litter cover, and avoided areas with dense grass, forbs, and herbaceous shrub cover. By contrast, birds consistently roosted in dense stands of emergent Phragmites or Typha marsh, suggesting that the best stopover or staging sites are those with a matrix of different wetland habitats. Although the migratory range of Rusty Blackbirds is currently dominated by agricultural development, our results suggest that fragmented landscapes can still provide adequate habitat for migrants if the available land is managed for a variety of wet habitat types.

Retinal Pigment Epithelial Detachment in Age-Related Macular Degeneration.

Retinal pigment epithelial detachment is defined as a separation of the retinal pigment epithelium from the inner collagenous layer of Bruch’s membrane. It is a common manifestation in both dry and wet types of age-related macular degeneration. This review aims to provide a comprehensive guide to the pathophysiology, clinical and imaging characteristics, natural course and treatment of the various types of pigment epithelial detachments in order to assist in diagnosis and management of this important feature of age-related macular degeneration.

Diversity of wet and mesic grasslands along a climatic gradient on the southern margin of the Pannonian Basin

AbstractQuestionsWhich are the main wet and mesic grassland vegetation types along the climatic gradient on the southern margin of the Pannonian basin? Which are the most important environmental gradients that determine their distribution and species composition?LocationThe southern margin of the Pannonian plain (N and E Slovenia, N Croatia, N Serbia).MethodsA database of 2,575 vegetation plots originally assigned to the Molinio‐Arrhenatheretea was compiled. Semi‐supervised classification based on the K‐means algorithm was applied to assign plots into 12 a‐priori alliances and to search for new alliances. Non‐metric Multidimensional Scaling (NMDS) ordination with Ellenberg's indicator values and bioclimatic variables were applied to show the influence of ecological conditions on species composition. The plots within each alliance were further classified into associations using the beta flexible method.ResultsClassification resulted in 12 alliances recognized in the EuroVegChecklist, and two new groups appeared. The first group occurs in the eastern part of the research area, where many ruderal species appear. This group was treated as a new alliance, Salvio nemorosae‐Arrhenatherion forming a vicariant syntaxon of the alliance Arrhenatherion. The second group occurs in the western part. It is a transitional group between mesic (Arrhenatherion) and wet meadows (Deschampsion) and can be treated as Alopecurion. Besides, three new associations and six new subassociations were described, together with the typification of seven associations and of three subassociations. Numerical analyses revealed floristic, ecological and geographical differentiation among analysed vegetation types.ConclusionsThe communities showed typical Central European features in the western part, but their floristic and ecological conditions changed towards the eastern part, where the continental influence was more pronounced. The vegetation structure and plant species composition in the studied area were influenced by soil moisture and soil nutrient availability as well as by strong biogeographical and climatic gradients.

Histomorphological aspects of cadaveric skin and its possible use in forensic genetics.

The skin is rarely considered as good biological material for successful DNA typing when a corpse is found in a leathery, mummified or partially skeletonised state, as bones and teeth are the gold standard in these cases. This study evaluates the histomorphological aspects of nuclear chromatin (Lillie's staining) in leathery and mummified skin samples as an indicator for possible successful DNA typing. Chromatin was found in samples that underwent mummification or partial skeletonisation but not in samples in a wet type of post-mortem transformation, such as saponification or leathery transformation. As a preliminary result, a positive detection of DNA profiles was only observed in 1-year-old mummified or partially skeletonised samples. These findings suggest that specific areas of skin, even from severely deteriorated cadavers, can show nuclear chromatin and DNA. These preliminary results raise the potential use of skin samples as an alternative source of DNA in highly degraded corpses.

OCT types of subretinal membranes in wet form of AMD and their impact on treatment

In the recent years OCT-A emerged as a new trend in the development of the OCT technology, giving us the opportunity to judge not only of the morphology of the retina, but also of the retinal blood flow and vessels. Aim: The aim of our survey was to show the diagnostic abilities of OCT-A in patients with wet AMD, and to evaluate the characteristic features of the neovascular membranes. Material and methods: In our survey 11 patients with wet AMD were enrolled. They all were ophthalmologically tested for VA, fluorescein angiography, OCT-A (Angiophlex, Zeiss). The ОСТ-А scans were examined in details and the characteristic features of the subretinal membranes were estimated. Results: In 5 patients with wet AMD type 1 of neovascular membranes has been detected. The new vessels emerged form the choroid, penetrated Bruhs membrane and were localized beneath the RPE. Type 2 of neovascular membranes was found in 4 patients. In that case the lesion originated again from the choroid but it passed trough the Bruch’s membrane and RPE and developed between RPE and neurosensory retina. In 2 patients type 3 – RAP lesions were found. In these cases the lesions originated from the deep retinal plexus. In 20% of the patients with quick progression of the disease well outlined neovascular membranes – lace or sea fan type, with branching new capillaries and anastomoses has been found. Discussion: ОСТ-А gives us the possibility to see clearly the structure of the subretinal membranes. Our results show that in all patients with branching, tiny, young capillaries, rapid progression of the disease is observed which requires immediate action and adequate therapy.

Landscape impacts of 3D-seismic surveys in the Arctic National Wildlife Refuge, Alaska.

Although three‐dimensional (3D) seismic surveys have improved the success rate of exploratory drilling for oil and gas, the impacts have received little scientific scrutiny, despite affecting more area than any other oil and gas activity. To aid policy‐makers and scientists, we reviewed studies of the landscape impacts of 3D‐seismic surveys in the Arctic. We analyzed a proposed 3D‐seismic program in northeast Alaska, in the northern Arctic National Wildlife Refuge, which includes a grid 63,000 km of seismic trails and additional camp‐move trails. Current regulations are not adequate to eliminate impacts from these activities. We address issues related to the high‐density of 3D trails compared to 2D methods, with larger crews, more camps, and more vehicles. We focus on consequences to the hilly landscapes, including microtopography, snow, vegetation, hydrology, active layers, and permafrost. Based on studies of 2D‐seismic trails created in 1984–1985 in the same area by similar types of vehicles, under similar regulations, approximately 122 km2 would likely sustain direct medium‐ to high‐level disturbance from the proposed exploration, with possibly expanded impacts through permafrost degradation and hydrological connectivity. Strong winds are common, and snow cover necessary to minimize impacts from vehicles is windblown and inadequate to protect much of the area. Studies of 2D‐seismic impacts have shown that moist vegetation types, which dominate the area, sustain longer‐lasting damage than wet or dry types, and that the heavy vehicles used for mobile camps caused the most damage. The permafrost is ice rich, which combined with the hilly topography, makes it especially susceptible to thermokarst and erosion triggered by winter vehicle traffic. The effects of climate warming will exacerbate the impacts of winter travel due to warmer permafrost and a shift of precipitation from snow to rain. The cumulative impacts of 3D‐seismic traffic in tundra areas need to be better assessed, together with the effects of climate change and the industrial development that would likely follow. Current data needs include studies of the impacts of 3D‐seismic exploration, better climate records for the Arctic National Wildlife Refuge, especially for wind and snow; and high‐resolution maps of topography, ground ice, hydrology, and vegetation.

Extreme-value analysis for the characterization of extremes in water resources: A generalized workflow and case study on New Mexico monsoon precipitation

Water managers need non-stationary tools to better characterize precipitation extremes. Statistical approaches based on extreme value theory (EVT) are increasingly being used, but few end-to-end generalized workflows are available. In this paper, a step-by-step framework is demonstrated for developing an EVT model that considers the influence of dominant weather patterns on precipitation extremes in a watershed. Specifically, the Point Process (PP) model is utilized, which is a unified statistical framework for modeling the frequency and magnitude of extremes above a threshold. Because threshold selection can be subjective, a demonstration of how to go about selecting a threshold is provided; in particular, by examining a range of thresholds. The workflow is applied to daily precipitation from the Rio Grande watershed in New Mexico. In this arid watershed, extreme precipitation events substantially contribute to total runoff. An improved understanding of the drivers and extent of changes in extreme precipitation is essential for water resource and risk management. In addition to a stationary PP model without covariates, several covariates are examined for inclusion in the location and scale parameters. The significance of including the covariates is assessed, as well as several additional criteria, including if the covariate(s) make intuitive sense and if it is a good candidate for statistical downscaling (i.e., methods that relate large-scale variables to the local scale). A final PP model is selected that includes the wet weather types in the location and scale parameters. This model is applied in a downscaling context using a large ensemble of climate projections, which shows that the frequency of exceeding a high threshold increases after 2050, but the conditional likelihood of exceeding the maximum observed precipitation stays relatively constant.

Experimental Study of Wet Cells HHO Generator using Galvanized Steel Plate Electrodes

Requirements of fuel oil increases along with the increasing their consumption in many sectors such as transportation, industrial and others. This issue has attracted great reseacher’s attention to find the alternative solution as a substitute for fossil fuel energy. Oxygen Hydrogen Hydrogen gas (HHO) can be used as one of this solution. HHO gas can be produced using wet cell HHO generator type. The objective of this research was to construct a simple wet cell HHO generator system and determine the performance of this generator. We use galvanized steel pelate as electrode with thickness 1,2 mm, NaOH catalyst in the electrolyte solution. The results showed that the HHO gas maximum productivity of the cell was 0,0022 L/h, the highest efficiency was 11% with a power consumption of 69.3 Watts.

Rancangbangun Starter Elektrik Portabel untuk Mesin Traktor Tangan

Indonesian farmers used to utilize crank to turn on hand tractor machine till today. It may make operators weariness and potentially raised work accident. The purpose of this study was to design a portable electric starter for hand tractor machine. Moreover, the study was addressed to evaluate the performance of the design. The minimum rotational speed (n) and initial torque (T) in decompression and non decompression conditions were adopted to calculate the minimum power (P) requirement. The minumum power of decompression and non decompression were 572.78 watts (≈ 0.74 hp) and 841.75 watts (≈ 1.09 hp), respectively. These values used as a reference in determining the main components, namely the wet type 12 volt battery and the serial type direct current starter motor. The next step, set up additional components, transmission mechanism, as well as concept of portable electric starter. The design was realized by construction and assembly process. A performance test was carried out on the prototype. The performance test of non decompression showed 1.88 seconds for working time, 264.56 Joules for workload (operator), 363.20 rpm for rotating speed and 0.68 watt hours for power requirement. Overall, application portable electric starter indicated better performance than crank. This study proved a high preference of operator on application of portable electric starter in decompression conditions.

Cooling characteristics of two cooling systems applied in natural light plant factory in high temperature summer

In view of the extreme high temperature in the summer when the natural light plant factory runs, it is easy to cause the plant to die due to high temperature. The actual operation of the Shanghai Chongming Natural Light Plant Factory in the past two years is studied to explore various ways of cooling - water Energy-saving groundwater source heat pump cooling air treatment unit (ATU), wet curtain fan, etc. cooling characteristics in the semi-enclosed natural light plant factory in the summer high temperature weather. The results show that the typical high temperature typical day, the natural light plant factory of the water storage type groundwater source heat pump cooling ATU cooling system is 13.88°C lower than the average temperature of the natural light plant without the system. In high temperature weather, the natural light plant factory wet curtain fan system and water storage type groundwater source heat pump cooling ATU cooling system have better cooling effect, but the latter cooling effect is better, such as only the wet curtain fan cooling system The average indoor temperature of the natural light plant factory A5 is 30.88°C; the average temperature of the natural light plant factory A2 of the natural light plant factory A28 with only the water storage type groundwater source heat pump cooling ATU cooling system is 28.64°C, the average temperature of the natural light plant factory A2 without taking any cooling measures is 40.19°C.

Regionalization of Northeast US moisture conditions: analysis of synoptic-scale atmospheric drivers

Previous investigations have documented relationships between global-scale forcings and Northeast United States moisture conditions, yet the physical pathways from global-scale forcing to sub-regional moisture deficit or surplus are not well understood. This research uses eigenvector-based regionalization to confirm the existence of sub-regional moisture environments within the Northeast. Synoptic classification is used to derive daily weather types that impact these moisture environments, and evaluate the relationship between global and synoptic scales. The Palmer Drought Severity Index (PDSI) regionalization identifies 3 sub-regions across the Northeast with homogeneous moisture conditions including New England, the Eastern Great Lakes, and Mid-Atlantic Regions. All 3 regions’ PDSI conditions are predominantly associated with variations in precipitation, rather than thermal characteristics. The frequency of key precipitation-associated synoptic types can inform PDSI variability in the regions, where drier conditions are observed during growing seasons with a reduced frequency of precipitation-inducing synoptic types and an enhanced frequency of dry synoptic types. Variations in the frequencies of these synoptic types are partially explained by the phase of the various teleconnection patterns. In the case of the New England region, 14% of the variance in PDSI is explained by the frequency of synoptic type D2, and 12% of the variance in D2 is explained by variations in the Summer Atmospheric Drought Index. The New England region became significantly wetter (positive PDSI) from 1950 to 2016. This study suggests a partial cause of this trend is the increased and decreased frequencies of wet and dry synoptic types, respectively, both related to the phase of the Summer Atmospheric Drought Index.

The influence of atmospheric circulation conditions on Betula and Alnus pollen concentrations in Wroc\u0142aw, Poland

The influence of atmospheric circulation conditions on pollen concentrations of two taxons (Betula and Alnus) in Wroclaw, Poland, for the years 2005–2014 was analysed. Pollen concentration was analysed separately for twenty circulation types that were determined using objective classification. The results indicate the atmospheric circulation conditions favourable for both low and high pollen concentrations over Central Europe. Pollen concentrations vary significantly according to circulation types. The highest pollen concentrations for both taxons are typical for warm, sunny, and dry anticyclonic circulation types with anticyclone in the lower and upper troposphere, especially for types with advection from the SW. The lowest pollen concentrations are observed for cold, wet, and cloudy cyclonic types with advection from the northern sectors. There is also a positive and statistically significant trend in the frequency of circulation types favourable for high concentrations of Betula and Alnus.