Low-cost self-paced interventions increase birth satisfaction in first time fathers

In this work, we demonstrate for the first time the capability to inscribe long-period gratings (LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a consumer grade 3D printer. The spectrum obtained for a grating with 690 µm period and 38 mm length presented good quality, showing sharp resonances (i.e., 3 dB bandwidth < 3 nm), low out-of-band loss (~0.2 dB), and dip losses up to 18 dB. Furthermore, the capability to select the resonance wavelength has been demonstrated using different amplitude mask periods. The customization of the masks makes it possible to fabricate gratings with complex structures. Additionally, the simplicity in 3D printing an amplitude mask solves the problem of the lack of amplitude masks on the market and avoids the use of high resolution motorized stages, as is the case of the point-by-point technique. Finally, the 3D printed masks were also used to induce LPGs using the mechanical pressing method. Due to the better resolution of these masks compared to ones described on the state of the art, we were able to induce gratings with higher quality, such as low out-of-band loss (0.6 dB), reduced spectral ripples, and narrow bandwidths (~3 nm).

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Printing ultrathin graphene oxide nanofiltration membranes for water purification

Journal of Materials Chemistry A ◽

10.1039/c7ta06307e ◽

2017 ◽

Vol 5 (39) ◽

pp. 20860-20866 ◽

Cited By ~ 33

Author(s):

Mahdi Fathizadeh ◽

Huynh Ngoc Tien ◽

Konstantin Khivantsev ◽

Jung-Tsai Chen ◽

Miao Yu

Keyword(s):

Graphene Oxide ◽

Water Purification ◽

Inkjet Printing ◽

Low Cost ◽

Nanofiltration Membranes ◽

Highly Effective ◽

First Time ◽

Polymeric Supports ◽

Effective Water

We demonstrated for the first time that inkjet printing can be a low-cost, easy, fast, and scalable method for depositing ultrathin (7.5–60 nm) uniform graphene oxide (GO) nanofiltration membranes on polymeric supports for highly effective water purification.

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Antimony trifluoride incorporated SnO2 for high-efficiency planar perovskite solar cells

Journal of Materials Chemistry C ◽

10.1039/d1tc03488j ◽

2021 ◽

Author(s):

Li Zhang ◽

Hui Li ◽

Jing Zhuang ◽

Yigang Luan ◽

Sixuan Wu ◽

...

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Tin Dioxide ◽

High Efficiency ◽

Low Cost ◽

Perovskite Solar Cells ◽

Transport Layer ◽

Electron Transport Layer ◽

Antimony Trifluoride ◽

First Time

The low-cost material antimony trifluoride (SbF3) was doped into the commonly used tin dioxide (SnO2) for the first time, and the SbF3-doped SnO2 as an electron transport layer (ETL) was...

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New Results of Using the Light Trap for Collecting Beetles (Insecta: Coleoptera) in the Urban Environment (on the Example of Saratov)

FIELD BIOLOGIST JOURNAL ◽

10.18413/2658-3453-2020-2-2-72-78 ◽

2020 ◽

Vol 2 (2) ◽

pp. 72-78

Author(s):

A.S. Sazhnev ◽

◽

V.V. Anikin ◽

Keyword(s):

Invasive Species ◽

Urban Areas ◽

Harmonia Axyridis ◽

Low Cost ◽

Light Trap ◽

Ecological Groups ◽

Light Traps ◽

Adventitious Species ◽

First Time ◽

Stegobium Paniceum

The article presents the results of research of the using light traps (luminescent lamp Actinic 6W) for collecting Coleoptera in the Saratov city. Entomological material was collected by the second author in the period from 1.06 to 2.10.2019. In 2019, 52 species of Coleoptera of 22 families from different ecological groups were recorded. A relatively high proportion of adventitious species remains in 17.3– 30.7% of the presented fauna was presented. For two years the 14 species of alien and cryptogenic Coleoptera species were observed, that is 24.5% of the adventive fauna of the Saratov Province. Among invasive species Attagenus smirnovi, Stegobium paniceum, Atomaria lewisi, Harmonia axyridis, Gnatocerus cornutus, and Orchestes steppensis were record for the first time in 2019. It to use bringing on light as one of the available and low-cost ways to identify alien and cryptogenic organisms in urban areas is recommended.

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Impact of the Karnofsky Performance Status on Survival and its Dynamics during the Terminal Year of Peritoneal Dialysis Patients

Peritoneal Dialysis International ◽

10.3747/pdi.2015.00241 ◽

2018 ◽

Vol 38 (1) ◽

pp. 24-29 ◽

Cited By ~ 6

Author(s):

Ana Paula Modesto ◽

Len Usvyat ◽

Viviane Calice-Silva ◽

Dandara Novakowski Spigolon ◽

Ana Elizabeth Figueiredo ◽

...

Keyword(s):

Peritoneal Dialysis ◽

Family Income ◽

Independent Predictor ◽

Karnofsky Performance Status ◽

Low Cost ◽

Performance Status ◽

Multi Center Study ◽

Complications And Mortality ◽

First Time

Background Simple and low-cost tools to monitor the risk profile of patients on peritoneal dialysis (PD) at high risk of complications and mortality are scarce. One of the tools available to monitor the variation in vitality and dependence levels is the Karnofsky performance status (KPS). This study analyzed the average trends and variation of KPS during the 12 months before death and its independent value in predicting patients’ survival. Methods The data were compiled from the BRAZPD II multi-center study, performed in Brazil between 2004 and 2011. For the analysis of KPS dynamics, we included patients with at least 12 months of follow-up on PD and who had a fatal event during the follow-up. The following covariables were evaluated: age, gender, ethnicity, educational level, and presence of diabetes. We used the linear regression model to present the results: the log (time) before death was represented by the regression variable and KPS was the response. We also analyzed the independent impact of baseline KPS on patients’ survival. Results From the population of 9,905 patients enrolled in the BRAZPD study, 4,133 survived 12 months on PD and were included in the analysis. There was a gradual decline in the KPS scores, which accelerated in the last 2 months before death. These changes were similar irrespective of age, race, family income, gender, diabetes, PD modality, and education level. We observed 989 fatal events in this population during the observation period, and the KPS score was identified as an independent predictor for mortality in this cohort. Conclusions This study demonstrates for the first time the dynamics of KPS before death in PD patients, indicating a progressive and accelerated decline of KPS in the 12 months before patients died. In addition, KPS was an independent predictor of mortality in this population.

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Controlled Assembly of Nanorod TiO2 Crystals via a Sintering Process: Photoanode Properties in Dye-Sensitized Solar Cells

International Journal of Photoenergy ◽

10.1155/2017/7686053 ◽

2017 ◽

Vol 2017 ◽

pp. 1-8

Author(s):

Saeid Vafaei ◽

Kazuhiro Manseki ◽

Soki Horita ◽

Masaki Matsui ◽

Takashi Sugiura

Keyword(s):

Solar Cells ◽

Low Cost ◽

Semiconductor Nanocrystals ◽

Photovoltaic Performance ◽

Dye Sensitized Solar Cells ◽

Sintering Process ◽

Dye Sensitized ◽

First Time ◽

Sensitized Solar Cells ◽

Control Crystallization

We present for the first time a synthetic method of obtaining 1D TiO2 nanorods with sintering methods using bundle-shaped 3D rutile TiO2 particles (3D BR-TiO2) with the dimensions of around 100 nm. The purpose of this research is (i) to control crystallization of the mixture of two kinds of TiO2 semiconductor nanocrystals, that is, 3D BR-TiO2 and spherical anatase TiO2 (SA-TiO2) on FTO substrate via sintering process and (ii) to establish a new method to create photoanodes in dye-sensitized solar cells (DSSCs). In addition, we focus on the preparation of low-cost and environmentally friendly titania electrode by adopting the “water-based” nanofluids. Our results provide useful guidance on how to improve the photovoltaic performance by reshaping the numerous 3D TiO2 particles to 1D TiO2-based electrodes with sintering technique.

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UNDERWATER PHOTOGRAMMETRY DIGITAL SURFACE MODEL (DSM) OF THE SUBMERGED SITE OF THE ANCIENT LIGHTHOUSE NEAR QAITBAY FORT IN ALEXANDRIA, EGYPT

ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ◽

10.5194/isprs-archives-xlii-2-w10-1-2019 ◽

2019 ◽

Vol XLII-2/W10 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

M. Abdelaziz ◽

M. Elsayed

Keyword(s):

3D Model ◽

Low Cost ◽

Data Gathering ◽

Archaeological Site ◽

3D Models ◽

Surface Model ◽

Digital Surface Model ◽

Architectural Elements ◽

3D Photogrammetry ◽

First Time

Abstract. Underwater photogrammetry in archaeology in Egypt is a completely new experience applied for the first time on the submerged archaeological site of the lighthouse of Alexandria situated on the eastern extremity of the ancient island of Pharos at the foot of Qaitbay Fort at a depth of 2 to 9 metres. In 2009/2010, the CEAlex launched a 3D photogrammetry data-gathering programme for the virtual reassembly of broken artefacts. In 2013 and the beginning of 2014, with the support of the Honor Frost Foundation, methods were developed and refined to acquire manual photographic data of the entire underwater site of Qaitbay using a DSLR camera, simple and low cost materials to obtain a digital surface model (DSM) of the submerged site of the lighthouse, and also to create 3D models of the objects themselves, such as statues, bases of statues and architectural elements. In this paper we present the methodology used for underwater data acquisition, data processing and modelling in order to generate a DSM of the submerged site of Alexandria’s ancient lighthouse. Until 2016, only about 7200&thinsp;m2 of the submerged site, which exceeds more than 13000&thinsp;m2, was covered. One of our main objectives in this project is to georeference the site since this would allow for a very precise 3D model and for correcting the orientation of the site as regards the real-world space.

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Antiviral Effects of Gelatin Stabilized Ferrous Sulfide Nanoparticles

10.21203/rs.3.rs-970779/v1 ◽

2021 ◽

Author(s):

Ting Tong ◽

Shuangfei Deng ◽

Xiaotong Zhang ◽

Liurong Fang ◽

Jiangong Liang ◽

...

Keyword(s):

Environmental Remediation ◽

Low Cost ◽

Antiviral Effect ◽

High Reactivity ◽

Host Cells ◽

Antiviral Effects ◽

Ferrous Sulfide ◽

Effective Inhibition ◽

Co Precipitation ◽

First Time

Abstract Ferrous sulfide nanoparticles (FeS NPs) are widely applied to environmental remediation, catalysis, energy storage and medicine because of their high reactivity, large specific surface area and low cost, arousing great interest of researchers. However, there is no literature reported on its application in the antiviral field. In the study, gelatin stabilized FeS nanoparticles (Gel-FeS NPs) were synthesized by co-precipitation of Fe2+ and S2‒ in the aqueous phase with continuous stirring under anaerobic conditions. The as-prepared Gel-FeS NPs were good stabilization and dispersibility with the size distribution of 77.7 ± 16.4 nm, as determined by UV-Vis spectrometer, TEM, FTIR, XRD and XPS. We reported for the first time the virucidic and antiviral activity of Gel-FeS NPs. The Gel-FeS NPs with good dispersibility and biocompatibility were synthesized, and they exhibited effective inhibition on the proliferation of PRRSV by blocking the PRRSV outside the host cells. Moreover, the Fe2+ from degraded ferrous sulfide still displayed an antiviral effect, demonstrating the advantage as an antiviral nanomaterial of Gel-FeS NPs compared to other nanomaterials. This work highlighted the antiviral effect of Gel-FeS NPs, broaden the applications of iron-based nanoparticles for combating the virus.

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