Journal articles: 'POM'

1

Martin, Denis-Constant, François Borel, Marc-Olivier Gonseth, Jacques Hainard, and Roland Kaehr. "Pom pom pom pom, musiques et caetera." Cahiers de musiques traditionnelles 11 (1998): 257. http://dx.doi.org/10.2307/40240319.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Rachdantia, Dheasari. "ECLECTIC STYLE P0M-POM BLANKET." Corak 9, no. 2 (February 11, 2021): 119–28. http://dx.doi.org/10.24821/corak.v9i2.3792.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

GONZALEZ-GUTIERREZ, Joamin, Gustavo Beulke STRINGAR, Barbara ZUPANČIČ, Galina KUBYSHKINA, Bernd VON BERNSTORF, and Igor Emri. "Time-Dependent Properties of Multimodal Polyoxymethylene based binder for Powder Injection Molding." Anali PAZU 1, no. 2 (May 17, 2022): 129–38. http://dx.doi.org/10.18690/analipazu.1.2.129-138.2011.

Full text

Abstract:

Powder injection molding (PIM) is one of the most versatile methods for the manufacturing of small complex shaped components from metal, ceramic or cemented carbide powders for the use in many applications. PIM consists of mixing the powder and a polymeric binder, injecting this mixture in a mold, debinding and then sintering. Catalytic debinding of polyoxymethylene (POM) is attractive since it shows high debinding rates and low risk of cracking. This work examines the possibility of using bimodal POM as the main component of the binding agent by studying its time-dependent and thermal properties and comparing them to monomodal POM. Furthermore, possible optimization of the binder formulation was investigated by the addition of short molecular weight polymeric chains (wax) to bimodal POM, as to create a multimodal material. It was observed that the magnitude of the complex viscosity for the commercial bimodal material was more than 2 times lower than for the chemically identical monomodal POM within the investigated frequency range. Viscosity values were observed to drop as the content of wax was increased, without compromising thebinders mechanical properties in solid state. A new formulation of bimodal POM plus 8 wt.% of added wax provided the most appropriate results from investigated combinations. This work has shown how the addition of short polymeric chains in POM influences its time-dependent properties in solid and molten state, which can be an important tool for the optimization of binders designed to be used in PIM technology.

APA, Harvard, Vancouver, ISO, and other styles

4

Jiao, Qi, Qin Chen, Lian Wang, Hualin Chen, and Yongjin Li. "Investigation on the Crystallization Behaviors of Polyoxymethylene with a Small Amount of Ionic Liquid." Nanomaterials 9, no. 2 (February 5, 2019): 206. http://dx.doi.org/10.3390/nano9020206.

Full text

Abstract:

Polyoxymethylene (POM) blends with excellent stiffness–toughness balance are successfully developed using Tributyl(octyl)phosphonium bis(trifloromethanesulfonyl) imide (TBOP-TFSI), one type of room-temperature ionic liquid, as the nucleating agent. Crystallization behaviors of POM blends have been studied by differential scanning calorimetry (DSC) and polarized light microscopy (PLM). The incorporation of TBOP-TFSI induces the crystal nucleation and fine crystal grain of POM, and also a much shorter hemi-crystalline time with only 0.5 wt% addition. The nucleation effect of ionic liquid leads to considerable improvement in the impact strength of POM blends while not sacrificing its tensile strength. Moreover, antistatic properties with a long-time stable performance are achieved by TBOP-TFSI addition as the electrical resistance reaches 1011 Ω/sq.

APA, Harvard, Vancouver, ISO, and other styles

5

Rumetna, Matheus Supriyanto, and Tirsa Ninia Lina. "PELATIHAN MENGHITUNG HASIL PENJUALAN ROKOK SELAMA MASA PANDEMI COVID-19 MENGGUNAKAN METODE SIMPLEKS DAN SOFTWARE POM-QM." Jurnal Pendidikan dan Pemberdayaan Masyarakat (JPPM) 8, no. 1 (July 1, 2021): 69–77. http://dx.doi.org/10.36706/jppm.v8i1.14110.

Full text

Abstract:

Perkembangan dalam bidang industri semakin maju serta dampak pandemi Covid-19, membuat usaha-usaha berskala kecil harus terus bersaing dan berinovasi. Salah satunya adalah pemilik usaha Kios Ibu Olan. Ibu Olan mengalami masalah dalam memaksimalkan keuntungan dari hasil penjualan rokok. Untuk memaksimalkan keuntungan yang diperoleh Ibu Olan, maka tim Pengabdian kepada Masyarakat (PkM) Program Studi Sistem Informasi Universitas Victory Sorong menawarkan pengunaan Program Linier (PL) dengan Metode Simpleks dan teknologi informasi berupa software POM-QM for windows 5.0. Selain itu tim PkM juga menerapkan pendekatan pendidikan masyarakat, dalam hal ini tim PkM melakukan pelatihan untuk menghitung bersama keuntungan dari hasil penjualan rokok. Pelatihan ini bertujuan meningkatkan pemahaman serta kesadaran pemilik usaha sekaligus merupakan hasil akhir dari kegiatan PkM ini.Kata kunci: metode simpleks, pelaku usaha, pelatihan, software POM-QM Abstract: Developments in the industrial sector are increasingly advanced as well as the impact of the Covid-19 pandemic, making small-scale businesses have to continue to compete and innovate. One of them is Mrs. Olan's business owner. Mrs. Olan is having trouble maximizing the profit from selling cigarettes. To maximize the benefits obtained by Ms. Olan, the Community Service Team (PkM) of the Information Systems Study Program at the University of Sorong Victory offers the use of the Linear Program (PL) with the Simplex Method and information technology in the form of POM-QM software for windows 5.0. In addition, the PkM team also applies a community education approach, in this case the PkM team conducts training to jointly calculate the profit from the sale of cigarettes. This training aims to increase the understanding and awareness of business owners as well as the final result of this PkM activity.Keywords: simplex method, business actors, training, POM-QM software

APA, Harvard, Vancouver, ISO, and other styles

6

Lee, Jae Wook, Dukjoon Kim, and Youngdon Kwon. "Mathematical characteristics of the pom-pom model." Rheologica Acta 41, no. 3 (April 1, 2002): 223–31. http://dx.doi.org/10.1007/s00397-001-0216-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Yang, Xi-Ya, Wen-Jing Li, Zeng-Long Tan, Jing-Quan Sha, Zhi-Bo Tong, Yu Zhang, and Ya-Qian Lan. "Polyoxometalate-pillared metal–organic frameworks synthesized by surfactant-assisted strategy and incorporated with carbon nanotubes for energy storage." Journal of Materials Chemistry A 8, no. 47 (2020): 25316–22. http://dx.doi.org/10.1039/d0ta08976a.

Full text

Abstract:

Two new crystalline POM-pillared 3D porous arrays, Co-PMo and Co-PW, have been synthesized. The Co-PMo/CNTs nanocomposites with increased effective sites and excellent conductivity exhibit excellent energy storage performance.

APA, Harvard, Vancouver, ISO, and other styles

8

Liu, Ying, Mengchu Zeng, Zhe Xie, Daliang Ning, Jizhong Zhou, Xi Yu, Rulong Liu, Li Zhang, and Jiasong Fang. "Microbial Community Structure and Ecological Networks during Simulation of Diatom Sinking." Microorganisms 10, no. 3 (March 17, 2022): 639. http://dx.doi.org/10.3390/microorganisms10030639.

Full text

Abstract:

Microbial-mediated utilization of particulate organic matter (POM) during its downward transport from the surface to the deep ocean constitutes a critical component of the global ocean carbon cycle. However, it remains unclear as to how high hydrostatic pressure (HHP) and low temperature (LT) with the sinking particles affects community structure and network interactions of the particle-attached microorganisms (PAM) and those free-living microorganisms (FLM) in the surrounding water. In this study, we investigated microbial succession and network interactions in experiments simulating POM sinking in the ocean. Diatom-derived 13C- and 12C-labeled POM were used to incubate surface water microbial communities from the East China Sea (ECS) under pressure (temperature) of 0.1 (25 °C), 20 (4 °C), and 40 (4 °C) MPa (megapascal). Our results show that the diversity and species richness of the PAM and FLM communities decreased significantly with HHP and LT. Microbial community analysis indicated an increase in the relative abundance of Bacteroidetes at high pressure (40 MPa), mostly at the expense of Gammaproteobacteria, Alphaproteobacteria, and Gracilibacteria at atmospheric pressure. Hydrostatic pressure and temperature affected lifestyle preferences between particle-attached (PA) and free-living (FL) microbes. Ecological network analysis showed that HHP and LT enhanced microbial network interactions and resulted in higher vulnerability to networks of the PAM communities and more resilience of those of the FLM communities. Most interestingly, the PAM communities occupied most of the module hubs of the networks, whereas the FLM communities mainly served as connectors of the modules, suggesting their different ecological roles of the two groups of microbes. These results provided novel insights into how HHP and LT affected microbial community dynamics, ecological networks during POM sinking, and the implications for carbon cycling in the ocean.

APA, Harvard, Vancouver, ISO, and other styles

9

Khadempir, Sara, Ali Ahmadpour, Mohammad Taghi Hamed Mosavian, Narges Ashraf, Fatemeh F. Bamoharram, Rodrigo Fernández-Pacheco, Jesús M. de la Fuente, and Scott G. Mitchell. "Mechanistic insights into the activation process in electrocatalytic ethanol oxidation by phosphomolybdic acid-stabilised palladium(0) nanoparticles (PdNPs@PMo12)." RSC Advances 6, no. 7 (2016): 5359–66. http://dx.doi.org/10.1039/c5ra22698h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Meinander, P. O., and Joji Taketomi. "POM System." JAPAN TAPPI JOURNAL 57, no. 12 (2003): 1773–82. http://dx.doi.org/10.2524/jtappij.57.1773.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Navarro, D., M. M. González Brao, and M. Milà. "POM April." Drugs of the Future 40, no. 4 (2015): 237. http://dx.doi.org/10.1358/dof.2015.040.04.2319306.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Cook, R. "POM advertising." Veterinary Record 125, no. 21 (November 18, 1989): 537. http://dx.doi.org/10.1136/vr.125.21.537-a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Thanh Huyen, Phan Thi, Daisuke Shimbara, Shinya Sakaida, and Hideto Ogawa. "POM/JLEC." ACM SIGSOFT Software Engineering Notes 40, no. 6 (November 11, 2015): 1–5. http://dx.doi.org/10.1145/2830719.2830731.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Lentzakis, Helen, Chinmay Das, Dimitris Vlassopoulos, and Daniel J. Read. "Pom-pom-like constitutive equations for comb polymers." Journal of Rheology 58, no. 6 (November 2014): 1855–75. http://dx.doi.org/10.1122/1.4895606.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Rubio, P., and M. H. Wagner. "LDPE melt rheology and the pom–pom model." Journal of Non-Newtonian Fluid Mechanics 92, no. 2-3 (August 2000): 245–59. http://dx.doi.org/10.1016/s0377-0257(00)00094-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Smid, Gioia. "Pim and Pom, the cats with nine lives." Animation Practice, Process & Production 2, no. 1 (December 1, 2012): 49–63. http://dx.doi.org/10.1386/ap3.2.1-2.49_1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Hirschberg, V., S. Lyu, and M. G. Schußmann. "Complex polymer topologies in blends: Shear and elongational rheology of linear/pom-pom polystyrene blends." Journal of Rheology 67, no. 2 (March 2023): 403–15. http://dx.doi.org/10.1122/8.0000544.

Full text

Abstract:

The shear and elongational rheology of linear and pom-pom shaped polystyrene (PS) blends was investigated experimentally and modeled using constitutive models such as the Doi–Edwards and the molecular stress function (MSF) model. The pom-pom molecule is the simplest topology to combine shear thinning with strain hardening in elongational flow. A PS pom-pom with a self-entangled backbone (Mw,bb = 280 kg mol−1) and 22 entangled sidearms (Mw,a = 22 kg mol−1) at each star was blended with two linear PS with weight average molecular weights of Mw = 43 and 90 kg mol−1 and low polydispersities (Ð < 1.05). A semilogarithmic relationship between the weight content of the pom-pom, ϕpom-pom, and the zero-shear viscosity was found. Whereas the pure pom-pom has in uniaxial elongational flow at T = 160 °C strain hardening factors (SHFs) of SHF ≈100, similar values can be found in blends with up to ϕpom-pom = 50 wt. % in linear PS43k and PS90k. By blending only 2 wt. % pom-pom with linear PS43k, SHF = 10 can still be observed. Furthermore, above ϕpom-pom = 5–10 wt. %, the uniaxial extensional behavior can be well-described with the MSF model with a single parameter set for each linear PS matrix. The results show that the relationship between shear and elongational melt behavior, i.e., zero-shear viscosity and SHF, can be uncoupled and customized tuned by blending linear and pom-pom shaped polymers and very straightforwardly predicted theoretically. This underlines also the possible application of well-designed branched polymers as additives in recycling.

APA, Harvard, Vancouver, ISO, and other styles

18

Wu, Kuo-Hui, Yin-Chiung Chang, and Je-Chuang Wang. "Immobilization of polyoxometalate on aminosilane-modified silicate: Synthesis, characterization and antibacterial performance." Materials Express 9, no. 8 (November 1, 2019): 970–77. http://dx.doi.org/10.1166/mex.2019.1569.

Full text

Abstract:

This paper presents studies on the immobilization of the polyoxometalate (H5PV2Mo10O40) on aminosilanemodified silicate as a new barrier of biological toxicant. The polyoxometalate-doped aminosilane-modified silicate (Ormosil/POM hybrid and Ormosil + POM blend) were synthesized by an in situ sol–gel route under acidic conditions. The physical properties of the samples were examined using NMR, SEM, XPS and TGA spectroscopy. The results indicated that POM was immobilized in channels by covalent linkages with the Ormosil of the Ormosil/POM hybrid, and that POM was incorporated into the Ormosil after impregnation from the Ormosil + POM blend. The covalent bond resulted from the reaction of Ormosil with POM, in which Si species were inserted into the vacancy of lacunary POM to form Si–O–Mo bonds. The antibacterial effects of samples were investigated with zone of inhibition testing, the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). The Ormosil/POM hybrid and Ormosil + POM blend possessed excellent antibacterial abilities and the antibacterial performance of the Ormosil/POM hybrid was better than that of the Ormosil + POM blend.

APA, Harvard, Vancouver, ISO, and other styles

19

Wibowo, Adityo Ari, Hanapia Nurpadilah, Moh Arifudin, Siti Amaliah Karim, and Tasya Nabila Nur Azmi. "Pengembangan Masyarakat Mandiri melalui Pelatihan Kerajinan Tangan dan Budidaya Tanaman Sayuran di Kampung Silongong." SYUKUR (Jurnal Inovasi Sosial dan Pengabdian Masyarakat) 1, no. 2 (October 30, 2018): 155. http://dx.doi.org/10.22236/syukur_vol1/is2pp155-167.

Full text

Abstract:

Program Pengabdian Masyarakat (PKM) yang dilaksanakan di Kampung Silongong, Koleang,bertujuan supaya masyarakat sebagai pihak PKM memiliki keterampilan khusus yang memilikinilai ekonomis agar masyarakat lebih mandiri. Hal ini didasarkan pada permasalahan yangditemukan berkaitan dengan penyusunan laporan akhir kegiatan PKM. Permasalahan yangditemukan, antara lain: 1) Tingkat wirausahawan di Kampung Silongong masih cukup rendah;2) Permasalahan sosial yang disebabkan karena faktor geografis. Solusi yang ditawarkan ialah:1) Memberikan penyuluhan dan pelatihan kerajinan tangan pembuatan pom-pom dan bros untukanak-anak sekolah menengah atas di SMK Ar-Rahman; 2) Memberikan penyuluhan, pelatihan,dan bantuan fisik berupa bibit penanaman tanaman sayuran sebanyak 180 tanaman dengan metodepolybag yang terdiri dari tanaman sayuran cabe, kangkung, bayam dan seledri; 3) Memberikanpelatihan, penyuluhan dan memberikan bantuan fisik, ikut serta dan aktif menjadi panitia dalamberbagai kegiatan di Kampung Silongong serta melaksanakan program belajar mengajar bagianak-anak. Hasil dari kegiatan PKM ini diharapkan dapat memajukan dan mensejahterakanKampung Silongong, untuk menuju Kampung Silongong yang lebih baik.

APA, Harvard, Vancouver, ISO, and other styles

20

Kasserra, Claudia, Mahmoud Assaf, Matthew Hoffmann, Yan Li, Liangang Liu, Xiaomin Wang, Gondi Kumar, and Maria Palmisano. "Evaluation Of CYP450 and Transporter-Mediated Drug-Drug Interaction Potential Of Pomalidomide In Healthy Men and In Vitro." Blood 122, no. 21 (November 15, 2013): 1989. http://dx.doi.org/10.1182/blood.v122.21.1989.1989.

Full text

Abstract:

Abstract Introduction Pomalidomide (POM) is an IMiD® immunomodulatory agent recently approved by the FDA for the treatment of patients with relapsed/refractory multiple myeloma. The prevalence of polypharmacy in disease treatment raises the possibilities of drug-drug interactions. Therapies that are CYP450 inhibitors, inducers, or transporter inhibitors, may alter the clinical exposure of substrates of these enzymes and transporters when they are administered concomitantly. POM is known to be predominantly metabolized via CYP450-mediated hydroxylation.1 The aim was to investigate the inhibition/induction potential of POM and its sensitivity as a CYP450 substrate in vitro, and to evaluate the impact of strong CYP450 inhibitors/inducers and a P-glycoprotein (P-gp) inhibitor on the pharmacokinetics (PK) of POM in healthy male subjects. Methods In vitro analyses were conducted using standard published methodologies.2-7 The in vitro data were followed up with a phase 1, open-label, non-randomized study in healthy men with single doses (SD) of POM. The study comprised a screening phase, 2 parallel treatment groups and a safety follow-up. Subjects in Part 1 received POM (4 mg SD) alone; ketoconazole (KETO 200 mg twice daily [BID] for 7 days) + POM (4 mg SD on day 5); and KETO (200 mg BID) + fluvoxamine (FLUV 50 mg BID) for 7 days + POM (4 mg SD on day 5) in three sequential periods to evaluate the effect of CYP3A4 and P-gp (KETO) and CYP1A2 (FLUV) inhibition on POM PK. Subjects in Part 2 received POM (4 mg SD) alone followed by carbamazepine (CARB 200 mg BID) for 11 days + POM (4 mg SD on day 10) in two sequential periods to evaluate the effect of CYP3A4 induction on POM PK. Serial blood samples were collected to determine the plasma concentrations of POM, FLUV, KETO, CARB and CARB-10, 11-epoxide by validated LC-MS/MS assay. PK and safety data were summarized using descriptive statistics. An analysis of variance model was performed on natural log transformed PK data, and used to estimate the ratio of geometric means between POM and the other drugs with treatments as fixed effects and subjects as random effect. Results In vitro, POM did not inhibit or induce CYP450 enzymes, nor the transporters P-gp, BCRP, OAT1, OAT2, OAT3, OATP1B1, or OATP1B3. The in vitro oxidative metabolism of POM was predominately mediated by CYP3A4 and CYP1A2. In the clinical trial, all 32 enrolled subjects (age 20–54 years; BMI 19.3–30.3 kg/m2) were included in the PK and safety analyses. Statistical comparison showed that the mean exposure of POM administered after multiple doses of KETO was increased by ∼19% (AUC0-inf) and 7% (Cmax) compared to exposure of POM alone (Table). Addition of FLUV to the POM + KETO regimen increased mean exposure of POM by ∼107% (AUC0-inf) and 13% (Cmax) compared to POM + KETO. Overall, co-administration of POM + KETO + FLUV increased mean exposure of POM by ∼146% (AUC0-inf) and 21% (Cmax) compared to POM alone. The mean exposure of POM when administered after multiple doses of CARB decreased by ∼20% (AUC0-inf) and 25% (Cmax) compared to exposure of POM alone. The mean estimated terminal half-life of POM was similar with or without KETO or CARB (range 5.85 to 6.77 h), but increased in the presence of KETO + FLUV (12.37 h), suggesting that the predominant interaction may be on the clearance (CL/F) rather than the absorption phase of POM. POM CL/F was decreased by ∼16% in the presence of KETO (6.96 L/h), and decreased by ∼56% in the presence of KETO + FLUV (3.64 L/h), compared to POM alone (8.27 L/h). In contrast, POM + CARB increased POM CL/F compared to POM alone (9.49 versus 7.56 L/h). POM 4 mg SD was generally well tolerated either alone or with the other drugs. The most common POM-related adverse event (AE) was nausea (6.3% of subjects). No deaths or serious AEs were reported. Conclusions POM appears to have a low potential for drug-drug interactions. POM is not a CYP450 inhibitor, inducer, or transporter inhibitor, in vitro and is therefore unlikely to affect the exposure of other drugs clinically. Co-administration of POM with the strong CYP3A4/5 and P-gp inhibitor KETO, or the strong CYP3A4/5 inducer CARB, had no clinically relevant effect on exposure to POM. Co-administration of POM with a strong CYP1A2 inhibitor (FLUV) will likely increase systemic exposure to POM and subjects receiving these concomitantly should be closely monitored for the occurrence of side-effects. POM 4 mg was generally well tolerated. Disclosures: Kasserra: Celgene: Employment, Equity Ownership. Assaf:Celgene Corporation: Employment, Equity Ownership. Hoffmann:Celgene Corporation: Employment, Equity Ownership. Li:Celgene Corporation: Employment, Equity Ownership. Liu:Celgene Corporation: Employment, Equity Ownership. Wang:Celgene Corporation: Employment, Equity Ownership. Kumar:Celgene Corporation: Employment, Equity Ownership. Palmisano:Celgene Corporation: Employment, Equity Ownership.

APA, Harvard, Vancouver, ISO, and other styles

21

Pielichowska, Kinga, Dariusz Bieliński, Michał Dworak, Ewelina Kilian, Beata Macherzyńska, and Stanisław Błażewicz. "The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites." International Journal of Polymer Science 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/9051914.

Full text

Abstract:

The influence of nanohydroxyapatite on the glass transition region and its activation energy, as well as on the tribological and mechanical properties of polyoxymethylene nanocomposites, was investigated using DMA, TOPEM DSC, nanoindentation, and nondestructive ultrasonic methods. It was found that the glass transition for unmodified POM was in the lower temperature range than in POM/HAp nanocomposites. Moreover,ΔCpand activation energy were larger for POM/HAp nanocomposites. Friction coefficient was higher for POM/HAp nanocomposites in comparison to both POM homopolymer and POM copolymer. Simultaneously, the indentation test results show that microhardness is also higher for POM/HAp nanocomposites than for POM. From ultrasonic investigations it was found that the highest values of both longitudinal and transverse propagation waves and Young’s and shear modulus for POM homopolymer (DH) and POM copolymer T2H and their nanocomposites can be attributed to their higher degree of crystallinity in comparison to UH copolymer. Moreover, for POM/HAp nanocomposites with 5% of HAp, ultrasonic longitudinal wave velocity was almost constant even after 1000000 mechanical loading cycles, evidencing an enhancement of mechanical properties by HAp nanoparticles.

APA, Harvard, Vancouver, ISO, and other styles

22

Sanaye, Sepehr, and Mohammad Hekmatian. "Comparison of demand limiting and load leveling operating modes of ice cold energy storage (ICES) in an air-conditioning system." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 234, no. 1 (December 10, 2019): 137–56. http://dx.doi.org/10.1177/0954408919890434.

Full text

Abstract:

Application of ice cold energy storage (ICES) is for reducing power consumption in air-conditioning systems. ICES systems have two full and partial operating modes. Partial operating mode of ICES system is modeled here at two demand limiting (POM-DL) and load leveling (POM-LL) conditions. After energy, exergy, and economic and environmental modeling/analysis of POM-DL and POM-LL, multi-objective (exergy and total cost) genetic algorithm (GA) optimization technique is applied to find the optimum values of objective functions and system design parameters. Then, the performance of POM-DL and POM-LL systems is compared. For our case study, the acquired results show 11.20% and 10.94% reduction in electricity consumption for POM-DL and POM-LL systems, respectively, in comparison with that for a traditional VCR (an electrical chiller). Furthermore, these systems reduce 13.58% and 12.36% electricity cost by shifting the electricity consumption of cooling system from on peak (ONP) hours to off peak (OFP) hours for POM-DL and POM-LL, respectively.

APA, Harvard, Vancouver, ISO, and other styles

23

Xu, Qinghong, Shanshan Yuan, Li Zhu, Jian Hao, and Yongge Wei. "Synthesis of novel bis(Triol)-functionalized Anderson clusters serving as potential synthons for forming organic–inorganic hybrid chains." Chemical Communications 53, no. 38 (2017): 5283–86. http://dx.doi.org/10.1039/c7cc01971h.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Haydukivska, K., O. Kalyuzhnyi, V. Blavatska, and J. Ilnytskyi. "Swelling of asymmetric pom-pom polymers in dilute solutions." Condensed Matter Physics 25, no. 2 (2022): 23302. http://dx.doi.org/10.5488/cmp.25.23302.

Full text

Abstract:

In this paper we continue our recent analysis [K. Haydukivska et al., J. Mol. Liq., 2021, 328, 115456] of complex molecules with two branching points at both ends of the linear backbone with f1 and f2 side arms starting from them, known as the pom-pom polymers. Here, we analyze the asymmetric case, f1 ≠ f2, by applying both the analytical approach, based on the direct polymer renormalization, and computer simulations using both dissipative particle dynamics and Monte Carlo methods. We study the role played by the molecular asymmetry of average polymer conformations, considering the infinite dilution regime and good solvent conditions.The quantitative estimates are reported for the set of universal size and shape characteristics of such molecules and for their individual branches, all the functions of f1 and f2. In particular, we evaluate the size ratio of the gyration radii of symmetric and asymmetric pom-pom topologies with the same molecular weight and quantitatively reveal an increase of the effective size of a molecule caused by its asymmetry. We also introduce and analyse the asymmetry factor and estimate the shift of the center of mass caused by the presence of side stars, which can serve as another characteristic of the asymmetry of pom-pom structure.

APA, Harvard, Vancouver, ISO, and other styles

25

Chodankar, Chirag D., Jay D. Schieber, and David C. Venerus. "Pom–Pom theory evaluation in double-step strain flows." Journal of Rheology 47, no. 2 (March 2003): 413–27. http://dx.doi.org/10.1122/1.1538610.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Hawke, L. G. D., Q. Huang, O. Hassager, and D. J. Read. "Modifying the pom-pom model for extensional viscosity overshoots." Journal of Rheology 59, no. 4 (July 2015): 995–1017. http://dx.doi.org/10.1122/1.4922060.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Baltussen, Michiel G. H. M., Wilco M. H. Verbeeten, Arjen C. B. Bogaerds, Martien A. Hulsen, and Gerrit W. M. Peters. "Anisotropy parameter restrictions for the eXtended Pom-Pom model." Journal of Non-Newtonian Fluid Mechanics 165, no. 19-20 (October 2010): 1047–54. http://dx.doi.org/10.1016/j.jnnfm.2010.05.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Hamaguchi, Yukiyoshi, Steven K. Juhn, and Yasuo Sakakura. "Protease Inhibitors in Middle Ear Effusions from Experimental Otitis Media with Effusion: Kinetics of α1-Antitrypsin and α2-Macroglobulin Levels." Annals of Otology, Rhinology & Laryngology 98, no. 4 (April 1989): 287–92. http://dx.doi.org/10.1177/000348948909800410.

Full text

Abstract:

Alpha 1-antitrypsin (α1-AT) and alpha 2-macroglobulin (α2-M) were measured by both immunochemical and functional assays in paired plasma and middle ear effusions (MEEs) from experimental otitis media models (serous otitis media [SOM], purulent otitis media [POM], and SOM + POM). The MEE/plasma ratio of α1-AT in SOM was significantly higher than that in POM (p< .01) because of the high α1-AT level in POM plasma. The ratio of both antitryptic activity and trypsin-binding activity in POM was significantly higher than that in SOM + POM (p< .01, < .05), and significantly lower than that in SOM (p< .01). The majority of both inhibitors in SOM exist as the free state, and the reaction between proteases and inhibitors in POM and SOM + POM is more active than that in SOM. It is concluded that both α1-AT and α2-M appear to play an important role in the protection of middle ear mucosa by forming protease-inhibitor complexes to reduce proteolytic damage in POM and SOM + POM models.

APA, Harvard, Vancouver, ISO, and other styles

29

Pielichowska, Kinga, Paula Szuba, Joanna Maciocha, Beata Macherzyńska, Katarzyna Nowicka, and Piotr Szatkowski. "Preparation, Characterization, and Bioactivity Evaluation of Polyoxymethylene Copolymer/Nanohydroxyapatite-g-Poly(ε-caprolactone) Composites." Nanomaterials 12, no. 5 (March 3, 2022): 858. http://dx.doi.org/10.3390/nano12050858.

Full text

Abstract:

In this work, nanohydroxyapatite (HAp) was functionalized with poly(ε-caprolactone) (PCL), using 1,6-hexamethylene diisocyanate (HDI) as a coupling agent, and then incorporated into the polyoxymethylene copolymer (POM) matrix using the extrusion technique. The obtained POM/HAp-g-PCL composites were investigated using FTIR, DSC, TOPEM DSC, and TG methods. Mechanical properties were studied using destructive and non-destructive ultrasonic methods, wettability, and POM crystallization kinetics in the presence of HAp-g-PCL. Moreover, preliminary bioactivity evaluation of the POM/HAp-g-PCL composites was performed using the Kokubo method. It was found that the introduction of HAp-g-PCL to the POM matrix has a limited effect on the phase transitions of POM as well as on its degree of crystallinity. Importantly, HAp grafted with PCL caused a significant increase in the thermal stability of the POM, from 292 °C for pristine POM to 333 °C for POM modified with 2.5% HAp-g-PCL. If unmodified HAp was used, a distinct decrease in the thermal stability of the POM was observed. Crystallization kinetic studies confirmed that HAp-g-PCL, in small amounts, can act as a nucleating agent for the POM crystallization process. Moreover, incorporation of HAp-g-PCL, although slightly decreasing the mechanical properties of POM composites, improved the crucial parameter in biomedical applications, namely the in vitro bioactivity.

APA, Harvard, Vancouver, ISO, and other styles

30

Wacharawichanant, Sirirat, Parida Amorncharoen, and Ratiwan Wannasirichoke. "Effects of Compatibilizer on the Properties of Polyoxymethylene/Acrylonitrile-Butadiene-Styrene Blends." Advanced Materials Research 1052 (October 2014): 220–25. http://dx.doi.org/10.4028/www.scientific.net/amr.1052.220.

Full text

Abstract:

The effects of styrene-co-maleic anhydride (SMA) compatibilizer on the mechanical thermal and morphological properties of polyoxymethylene (POM)/acrylonitrile-butadiene-styrene (ABS) blends were inverstigated. POM/ABS blends without and with SMA compatibilizer were prepared by an internal mixer and molded by compression molding. It was found that the dispersion of ABS phase and compatibility could not improve by using SMA compatibilizer in POM/ABS blends due to SMA can be miscible with ABS phase more than POM phase. The addition of ABS in a range of 10-30 wt% could improve the Young’s modulus of POM. Impact strength, tensile strength and percent strain at break of POM/ABS blends decreased with increasing ABS content. The addition of compatibilizer improved Young’s modulus of POM/ABS (60/40, 50/50) blends. The addition of ABS increased the degradation temperature of POM, while SMA compatibilizer did not improve the degradation of POM/ABS blends.

APA, Harvard, Vancouver, ISO, and other styles

31

Liu, Huifang, Zhen Li, Jing Dong, Dan Liu, Chengpeng Liu, Yingnan Chi, and Changwen Hu. "Polyoxometalates encapsulated into hollow double-shelled nanospheres as amphiphilic nanoreactors for an effective oxidative desulfurization." Nanoscale 12, no. 31 (2020): 16586–95. http://dx.doi.org/10.1039/d0nr03951a.

Full text

Abstract:

Amphiphilic polyoxometalate (POM) nanoreactors have been successfully fabricated by encapsulating Keggin-type PMo₁₂ into hollow mesoporous double-shelled SiO₂@C nanospheres, which can effectively catalyze the oxidative desulfurization reaction.

APA, Harvard, Vancouver, ISO, and other styles

32

Setyawan, Setyawan, and Junaidi Pangeran Saputra. "Kajian Penambahan Konsentrat Ampas Tahu Terhadap Pertambahan Berat Badan Sapi Peranakan Ongole." Jurnal Pengembangan Penyuluhan Pertanian 18, no. 34 (December 31, 2021): 166. http://dx.doi.org/10.36626/jppp.v18i34.704.

Full text

Abstract:

ABSTRAKTernak sapi potong Peranakan Ongole (PO) memiliki keunggulan sebagai sapi tropis; tahan panas, tahan gangguan parasit dan toleransi terhadap pakan yang mengandung serat kasar tinggi. Kajian ini bertujuan untuk melihat penambahan konsentrat ampas tahu terhadap PBB ternak sapi potong PO. Metode menggunakan ternak sapi PO betina berjumlah 4 ekor, umur sapi PO1 dan PO2 berumur ≥ 2 tahun, sapi PO3 dan PO4 berumur ≤ 2 tahun. Pemberian ampas tahu sebanyak 1% dan hijauan 10% dari berat badan, penentuan jumlah pakan yang diberikan berdasarkan berat badan awal ternak sapi PO yaitu: PO1 berat badan awal 428 kg, ampas tahu 4,3 kg, hijauan 43 kg, PO2 berat bawal 297 kg, ampas tahu 3,0 kg, hijauan 30 kg, PO3 berat badan awal 203 kg, ampas tahu 2,0 kg, hijauan 20 kg, PO4 berat badan awal 142 kg, ampas tahu 1,4 kg, hijauan 14 kg. Peubah yang diukur adalah PBBH ternak sapi PO selama tiga bulan. Analisis data menggunakan analisis deskriptif. Hasil kajian bahwa ternak sapi PO yang diberikan hijauan dan konsentrat ampas tahu memiliki rata-rata PBBH 0,55 kg/ekor/hari. Ternak sapi PO2 memiliki rata-rata PBBH paling tinggi (0,70 kg/ekor/hari) dan terendah ternak sapi PO4 (0,28 kg/ekor/hari). Rata-rata PBB selama tiga bulan pada sapi PO1: 27,7 kg/ekor/bulan, PO2: 44,7 kg/ekor/bulan, PO3: 37,7 kg/ekor/bulan, PO4: 13,2 kg/ekor/bulan. Rata-rata PBB sapi PO keseluruhan selama 3 bulan yaitu 30,7 kg. Kesimpulan bahwa rata-rata PBBH ternak sapi PO adalah 0,55 kg dan rata-rata PBB seluruh ternak sapi PO per tiga bulan yaitu 30,7 kg.Kata kunci: Ampas Tahu, Pertambahan Berat Badan, Sapi Peranakan OngoleABSTRACTOngole Peranakan (PO) beef cattle have advantages as tropical cattle; heat resistance, parasitic disturbance resistance, and tolerance to feeds containing high crude fiber. This study aims to see the addition of tofu pulp concentrate to PBB of PO beef cattle. The method uses 4 female PO cattle, PO1 and PO2 cattle aged 2 years, PO3 and PO4 cows 2 years old. Giving tofu dregs as much as 1% and forage 10% of body weight, determining the amount of feed given based on the initial body weight of PO cattle, namely: PO1 initial body weight 428 kg, tofu dregs 4,3 kg, forage 43 kg, PO2 pomfret weight 297 kg, tofu dregs 3,0 kg, forage 30 kg, PO3 initial weight 203 kg, tofu dregs 2,0 kg, forage 20 kg, PO4 initial weight 142 kg, tofu dregs 1,4 kg, forage 14 kg. The variable measured was the PBBH of PO cattle for three months. Data analysis used descriptive analysis. The results of the study showed that PO cattle that were given forage and tofu waste concentrate had an average PBBH of 0,55 kg/head/day. PO2 cattle had the highest average PBBH (0,70 kg/head/day) and the lowest were PO4 cattle (0,28 kg/head/day). Average PBB for three months in cattle PO1: 27,7 kg/head/month, PO2: 44,7 kg/head/month, PO3: 37,7 kg/head/month, PO4: 13,2 kg/head /month. The average PBB of PO cattle for 3 months is 30,7 kg. The conclusion is that the average PBBH of PO cattle is 0,55 kg and the average PBBH of all PO cattle per three months is 30,7 kg.Keywords: Ongole Breeding Cattle, Tofu Residue, Weight Gain

APA, Harvard, Vancouver, ISO, and other styles

33

Krishna, Bheemappa Suresha, and H. M. Somashekar. "Role of Fillers on Physico-Mechanical Properties of POM Based Hybrid Composites." Applied Mechanics and Materials 895 (November 2019): 170–75. http://dx.doi.org/10.4028/www.scientific.net/amm.895.170.

Full text

Abstract:

Silicone (SC) and polytetrafluroethylene (PTFE) reinforced polyoxymethylene (POM) composites have been fabricated by melt mixing followed by injection moulding. Physical and mechanical properties of SC and SC+PTFE/POM composites have been investigated as per ASTM standards. The dispersion of fillers in POM was studied by using scanning electron microscopy (SEM). The effects indicated that the hardness of the POM matrix decreases with increasing the SC content and slight increase in hardness was found in SC+PTFE/POM. The mechanical performance of the composites are investigated by means of a well known universal testing machine and notched Charpy impact tester. The POM with 10 wt. % of SC binary composite reveals good mechanical properties. The tensile and flexural properties of SC+PTFE/POM hybrid composites are higher than that of 20 and 30 wt. % SC reinforced POM binary composites. Further, these mechanical strength and impact toughness are established on the kind as nicely as filler loading over the full range of the study. The uniform dispersion of the filler in the POM matrix is obtained from SEM micrographs. Furthermore, SEM was used to identify the fractographic points of the tensile fractured POM based composites.

APA, Harvard, Vancouver, ISO, and other styles

34

Duvanova, Ella, Illia Krasnou, Andres Krumme, Valdek Mikli, Serhii Radio, Georgiy M. Rozantsev, and Yevgen Karpichev. "Development of Functional Composite Cu(II)-Polyoxometalate/PLA with Antimicrobial Properties." Molecules 27, no. 8 (April 13, 2022): 2510. http://dx.doi.org/10.3390/molecules27082510.

Full text

Abstract:

Novel composite self-disinfecting films of polylactic acid (PLA) filled with nanosized particles of double sodium–copper(II) paratungstate B Na2Cu3(CuOH)2[W12O40(OH)2]·32H2O (POM) were developed. The solvent casting (POM/PLA film) and solvent-free melt extrusion methods (Extr. POM/PLA film) were applied for film preparation. The copper (II) ion release to water from both types of the films after 10 days at different temperatures demonstrated that the PLA matrix acts as a diffusion barrier, and the resulting concentration of released copper in water at room temperature remained low, at 0.79% for POM/PLA film and 0.51% for Extr. POM/PLA film. The POM-containing films reveals a significant inhibitory effect against E. coli ATCC 25922 in the agar diffusion test. The numbers of CFUs in washes of the films after incubation for 24 h were found to be 3.6 log CFU mL–1 (POM/PLA film) and 4.1 log CFU mL–1 (Extr. POM/PLA film). The films combine the antibacterial properties of POM and a bio-based polymer matrix, which makes them a prospective coating material for applications in hospital indoor environments. Excellent thermal stability of POM gives a technological advantage for industrial manufacturing to allow the processing of novel composite material in the solvent free (molten) state.

APA, Harvard, Vancouver, ISO, and other styles

35

Kurasawa, Yasuhiro, Akihiko Iida, Kaya Narimatsu, Hideki Sekiya, Yutaka Maruoka, and Yukihiro Michiwaki. "Effects of Perioperative Oral Management in Patients with Cancer." Journal of Clinical Medicine 11, no. 21 (November 6, 2022): 6576. http://dx.doi.org/10.3390/jcm11216576.

Full text

Abstract:

Perioperative oral management (POM) is used to prevent pneumonia in patients with cancer. However, the factors that expose hospitalized patients to increased risk of developing pneumonia remain unclear. For example, no study to date has compared the incidence of pneumonia in hospitalized patients by cancer primary lesion, or POM implementation, or not. We determined which patients were most likely to benefit from POM and examined the effects of POM on pneumonia prevention and mortality. In a total of 9441 patients with cancer who underwent surgery during hospitalization, there were 8208 patients in the No POM group, and 1233 in the POM group. We examined between-group differences in the incidence of pneumonia and associated outcomes during hospitalization. There was no significant between-group difference in the incidence of pneumonitis, however, patients with lung, or head and neck cancers, demonstrated a lower incidence of postoperative pneumonia. Among patients with lung and pancreatic cancers, mortality was significantly lower in the POM group. POM appears effective at reducing the risk of postoperative pneumonia in patients with certain cancers. Further, mortality was significantly lower in patients with lung and pancreatic cancers who received POM; hence, POM may be an effective adjuvant therapy for patients with cancer.

APA, Harvard, Vancouver, ISO, and other styles

36

Kurokawa, Masaya, Yoshitaka Uchiyama, Tomoaki Iwai, and Susumu Nagai. "Tribological Properties of Polyoxymethylene Composites Against Aluminum." Journal of Tribology 125, no. 3 (June 19, 2003): 661–69. http://dx.doi.org/10.1115/1.1540123.

Full text

Abstract:

Tribological properties of several kinds of polyoxymethylene (POM) composites were evaluated for the purpose of developing a polymeric tribomaterial especially suited for mating with aluminum parts having low surface hardness. POM composites containing small amounts of silicon carbide (SiC), POM/SiC; those containing a small amount of calcium octacosanonoate besides SiC, POM/SiC/Ca-OCA; and the one blended with 24 wt % of polytetrafluoroethylene, POM/PTFE(24); were injection-molded into pin specimens and their tribological properties were tested by means of a pin-on-disk type wear apparatus using an aluminum (A5056) mating disk in comparison with a 303 stainless steel (SUS303) disk. Evaluation was focused on observation of the sliding surfaces of the pin specimens and the mating disks by a scanning electron microscope and an optical microscope together with the measurement of surface roughness. In the case of mating against a SUS303 disk having high surface hardness, all pin specimens did not roughen the disk surfaces even after long time of rubbing. Only POM/PTFE(24) composite obviously made a transfer film on the disk surface, while the other composites made an extremely thin one on it. POM/SiC(0.1)/Ca-OCA(1) composite, containing SiC 0.1 wt. % and Ca-OCA 1 wt. %, was found to show the lowest coefficient of friction and the lowest wear rate forming extremely thin transfer film on the mating disk. On the other hand, against an A5056 disk which has lower surface hardness than that of SUS303 disk, unfilled POM and POM composites except POM/SiC(0.1)/Ca-OCA(1) composite roughened the disk surfaces. However, the sliding surface of the A5056 disk rubbed with POM/SiC(0.1)/Ca-OCA(1) composite was significantly smoother and that of the pin specimen was also quite smooth in comparison with other pin specimens. Further, when each POM composite was rubbed against the A5056 disk, formation of transfer film was not obvious on the disk surfaces. For POM/SiC(0.1)/Ca-OCA(1) composite, the wear rate was the lowest of all POM composites, and the coefficient of friction was as low level as 60 percent of that of unfilled POM, but slightly higher than that of POM/PTFE(24) composite. For POM/SiC(0.1)/Ca-OCA(1) composite, the nucleating effect of SiC and Ca-OCA, which accelerated the crystallization of POM during its injection molding to form a matrix containing fine spherulites, must have resulted in increasing the toughness of the matrix and lowering the wear rate. Also, the lubricant effect of Ca-OCA should have lowered the coefficient of friction of the same matrix for rubbing against aluminum mating disk. POM/SiC(0.1)/Ca-OCA(1) composite was concluded as an excellent tribomaterial for mating with aluminum parts.

APA, Harvard, Vancouver, ISO, and other styles

37

Król-Morkisz, Klaudia, Ewelina Karaś, Tomasz M. Majka, Krzysztof Pielichowski, and Kinga Pielichowska. "Thermal Stabilization of Polyoxymethylene by PEG-Functionalized Hydroxyapatite: Examining the Effects of Reduced Formaldehyde Release and Enhanced Bioactivity." Advances in Polymer Technology 2019 (December 19, 2019): 1–17. http://dx.doi.org/10.1155/2019/9728637.

Full text

Abstract:

Nanostructured hydroxyapatite (HA) functionalized with poly(ethylene glycol) (HA-g-PEG) of different molar mass was used as a thermal stabilizer to prepare polyoxymethylene (POM) composites by a melt processing method. The chemical and crystalline structure of (HA-g-PEG) and POM/HA-g-PEG composites was investigated by means of FTIR and XRD. The thermal properties, degree of crystallinity, and melting behaviour of POM-based composites were analysed with TG, DSC, and TOPEM DSC methods. The tensile strength, Young’s modulus, toughness, and wettability of POM were investigated as well. A preliminary assessment of bioactivity, in vitro chemical stability, and formaldehyde release from POM/HA-g-PEG composites by Schiff’s test was also performed. An SEM/EDX method was used to observe the morphology of POM/HA-g-PEG composites. The results indicate that the addition of 1% HA-g-PEG slightly increases the melting temperature and degree of crystallinity. In small amounts, HA-g-PEG particles probably act as nucleating agents for the POM crystallization process. Incorporation of 5% HA-g-PEG to POM caused a decrease in the crystallinity of the polymer matrix, as a result, some mechanical properties of POM/HA-g-PEG composites also decreased. The thermal stability of POM/HA-g-PEG composites improved significantly from 309°C for unmodified POM to 342°C for POM/10.0% HA-g-PEG 600. The most effective thermal stabilizer was synthesized with the lowest mass-average molar mass PEG. The in vitro bioactivity test confirmed that, as the average molar mass of PEG in HA-g-PEG hybrids increased, POM-based composites indicated higher bioactivity. The in vitro chemical stability analysis results showed that both the POM matrix and the HA-g-PEG additive remain stable during the whole incubation time. Importantly, after seven days of dynamic incubation, no formaldehyde was detected in all filtrates, which is crucial in biomedical applications, among others.

APA, Harvard, Vancouver, ISO, and other styles

38

Roberts, Cordelia, Ro Allen, Kimberley E. Bird, and Michael Cunliffe. "Chytrid fungi shape bacterial communities on model particulate organic matter." Biology Letters 16, no. 9 (September 2020): 20200368. http://dx.doi.org/10.1098/rsbl.2020.0368.

Full text

Abstract:

Microbial colonization and degradation of particulate organic matter (POM) are important processes that influence the structure and function of aquatic ecosystems. Although POM is readily used by aquatic fungi and bacteria, there is a limited understanding of POM-associated interactions between these taxa, particularly for early-diverging fungal lineages. Using a model ecological system with the chitin-degrading freshwater chytrid fungus Rhizoclosmatium globosum and chitin microbeads, we assessed the impacts of chytrid fungi on POM-associated bacteria. We show that the presence of chytrids on POM alters concomitant bacterial community diversity and structure, including differing responses between chytrid life stages. We propose that chytrids can act as ecosystem facilitators through saprotrophic feeding by producing ‘public goods’ from POM degradation that modify bacterial POM communities. This study suggests that chytrid fungi have complex ecological roles in aquatic POM degradation not previously considered, including the regulation of bacterial colonization, community succession and subsequent biogeochemical potential.

APA, Harvard, Vancouver, ISO, and other styles

39

Schepis, Ty S., Linda Wastila, Beth Ammerman, Vita V. McCabe, and Sean Esteban McCabe. "Prescription Opioid Misuse Motives in US Older Adults." Pain Medicine 21, no. 10 (December 9, 2019): 2237–43. http://dx.doi.org/10.1093/pm/pnz304.

Full text

Abstract:

Abstract Objectives To evaluate age-based differences in prescription opioid misuse (POM) motives and to evaluate substance use and mental and physical health correlates of POM motive categories in older adults. Design Data were from the National Survey on Drug Use and Health (NSDUH), a nationally representative US survey. Setting The NSDUH is a household survey. Subjects A total of 5,826 US residents with past-year POM; 415 were 50 years and older (7.1%). Methods Nine POM motives were assessed among those engaged in past-year POM, grouped into three categories: solely physical pain relief, solely non–pain relief, or mixed motives. Prevalence of POM motives were calculated by age group, with logistic models examining age-based differences. Finally, odds of substance use and mental and physical health correlates by motive category were calculated via logistic models in older adults. Results POM motivated solely by physical pain relief increased from 35.1% in young adults to 65.4% in older adults; in older adults, 84.7% of POM episodes involved pain relief as a motive. POM for solely non–pain relief or mixed motives was associated with greater odds, vs pain relief only, of past-year benzodiazepine misuse (odds ratio [OR] = 4.43 and 6.15, respectively), any substance use disorder (OR = 5.57 and 5.60, respectively), and suicidal ideation (OR = 4.05 and 3.56, respectively) in older adults. Conclusions . POM motives change over the lifespan, with increasing POM for pain relief with aging. Comprehensive nonopioid pain management is needed for those engaged in POM for pain relief, and substance use and mental health treatment are needed for those with non–pain relief motives.

APA, Harvard, Vancouver, ISO, and other styles

40

Boonlertsamut, Jitlada, Suchalinee Mathurosemontri, Supaphorn Thumsorn, Toshikazu Umemura, and Atsushi Sakuma. "Influence of temperature dependence on the structural characteristics of polyoxymethylene/poly(lactic acid) blends by injection molding." Journal of Polymer Engineering 39, no. 10 (November 26, 2019): 944–53. http://dx.doi.org/10.1515/polyeng-2019-0202.

Full text

Abstract:

Abstract In this research, different strategies to modify the structure of polymer blends were investigated with the objective of adjusting the composition of polyoxymethylene (POM) and poly(lactic acid) (PLA) under typical processing conditions. POM shows a good balance of mechanical and thermal properties. However, this polymer is obtained from petrochemical sources, and in some markets, environmentally friendly materials are important. Blending POM with PLA preserves the advantages of POM while ensuring the bio-based content of PLA. POM/PLA blends were prepared by an injection molding process with various injection speeds of 10, 50, 100, and 1000 mm/s to ensure high ductility. Mechanical property analysis showed that the PLA content and processing temperatures are highly effective in modifying the stiffness of POM/PLA blends. The effect of crystallization on POM/PLA blends was assessed by varying the annealing time. High-magnification scanning electron microscopy images revealed that the gaps between fibrillar regions represent the growth direction of the PLA phase before it was removed. This was evidence for the effect of PLA on the crystallization of POM. The crystal size and crystalline volume also affected the structural characteristics of POM/PLA blends.

APA, Harvard, Vancouver, ISO, and other styles

41

Abdul Nasir, Hamimatul Hayat, Hui Poh Goh, Daniel Vui Teck Wee, Khang Wen Goh, Kah Seng Lee, Andi Hermansyah, Yaser Mohammed Al-Worafi, and Long Chiau Ming. "Economic Analysis of Patient’s Own Medication, Unit-Use and Ward Stock Utilization: Results of the First Pilot Study." International Journal of Environmental Research and Public Health 19, no. 18 (September 9, 2022): 11350. http://dx.doi.org/10.3390/ijerph191811350.

Full text

Abstract:

Background: Medication wastage is causing a cost burden to the healthcare system that is worth millions of dollars. An economic and ecological friendly intervention such as using a patient’s own medications (POM) has proven to reduce wastage and save the cost spent by the hospital. The potential benefits of using POM in inpatient settings have yet to be explored in a country with universal health coverage. This study aimed to pilot test the POM intervention in an adult ward setting and to perform the economic analysis of using POM and ward stock during hospitalization. Methods: A prospective cross-sectional observational study was conducted among the patients admitted to the medical and surgical wards in a public hospital located in Brunei Darussalam between February 2022 and April 2022. Hospitalized adults above 18 years old with regular medications with a minimum length of stay of 48 h and a maximum length of stay of 21 days were included in the study. These eligible patients were divided into a POM group and a non-POM group. The economic analysis of using POM was performed by calculating the direct cost per unit of medication used during admission (from unit-use, ward stock and POM) and comparing the cost spent for both groups. Expired ward stock deemed as medication wastage was determined. Medical research ethics were approved, and all participating patients had given their written informed consent before enrolling in this study. Results: A total of 112 patients aged 63.2 ± 15.8 years participated in this study. The average cost of medication supplied by the inpatient pharmacy for the non-POM group was USD 21.60 ± 34.20 per patient, whereas, for the POM group, it was approximately USD 13.00 ± 18.30 per patient, with a mean difference of USD 8.60 ± 5.17 per patient (95% CI: −3.95, 27.47, p ≥ 0.05). The use of POM minimized 54.03% (USD 625.04) of the total cost spent by the hospital for the POM group within the period of the study. Conclusion: The pilot study showed that the supplied medication cost per patient was not significantly different between the POM and non-POM groups. Nevertheless, the utilization of POM during hospitalization is capable of reducing at least 50% of the total cost spent on inpatient medications by the hospital. The use of POM during hospitalization also helped in reducing the total time spent on the medication process per patient.

APA, Harvard, Vancouver, ISO, and other styles

42

Koole, Martijn. "Overkappingsprothese van POM." Tandartspraktijk 41, no. 9 (November 2020): 20–21. http://dx.doi.org/10.1007/s12496-020-0105-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

BORMAN, STU. "PROMISING POM-POMS." Chemical & Engineering News Archive 89, no. 25 (June 20, 2011): 14. http://dx.doi.org/10.1021/cen-v089n025.p014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Black, S. D. "POM + EBM = CPD?" Journal of Medical Ethics 26, no. 4 (August 1, 2000): 229–30. http://dx.doi.org/10.1136/jme.26.4.229.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Jovanovic, Marina, Tatjana Srdic-Rajic, Emilija Svircev, Nebojsa Jasnic, Biljana Nikolic, Svetlana Bojic, Tatjana Stevic, Jelena Knezevic-Vukcevic, and Dragana Mitic-Culafic. "Evaluation of anticancer and antimicrobial activities of the Polygonum maritimum ethanol extract." Archives of Biological Sciences 70, no. 4 (2018): 665–73. http://dx.doi.org/10.2298/abs180423028j.

Full text

Abstract:

Polygonum maritimum is a traditional herbal remedy that produces abundant flavonoid secondary metabolites. The ethanol extract of P. maritimum aerial parts (POM) was chemically characterized and tested for antimicrobial properties and cytotoxicity. Results of LC-MS/MS analysis showed high contents of gallic acid, epigallocatechin gallate and catechin, and significant amounts of quercetin-3-O-galactoside and quercetin-3-O-glucoside. Evaluation of the antifungal properties revealed that POM induced notable growth inhibition of Alternaria alternata (34.3%), Penicillium spp. (30.6%), Fusarium semitectum (20.2%) and Aspergillus spp. (19.6%). Evaluation of cytotoxicity against human hepatoma HepG2 cells included monitoring the effects of both POM alone and its combination with cytostatic doxorubicin (Dox). Cell viability, apoptosis and cell cycle distribution and the expression of antioxidant enzymes (superoxide-dismutases SOD1 and SOD2 and catalase) were determined. A dose-dependent decrease in cell viability was detected, but a remarkably stronger effect was obtained when POM and Dox were applied in combination as compared to individual treatments. IC50 values were determined to be 393 ?g/mL (POM) and 2.24 ?g/mL (Dox) in combination, but 1153 ?g/mL (POM) and 12.56 ?g/mL (Dox) in a single treatment. The value of the Loewe index, determined for IC50, was notably lower than 1 (LI=0.51), clearly indicating synergism of POM and Dox. Additionally, POM and POM +Dox induced early/late apoptosis and G2/M cell cycle arrest. Furthermore, POM increased, while Dox decreased the expression levels of SODs and catalase. The obtained results encourage further examination of the potential use of POM in modern phytotherapy.

APA, Harvard, Vancouver, ISO, and other styles

46

Fung, Nicole Long Ki, and Helene Fung. "Presence of Meaning Mediates the Relationship Between Meaning Search and Outcome: A Cross-Cultural Study." Innovation in Aging 4, Supplement_1 (December 1, 2020): 308. http://dx.doi.org/10.1093/geroni/igaa057.986.

Full text

Abstract:

Abstract Search for meaning (SFM) is associated with many well-being measures. The mechanism behind remains unclear. This study explores presence of meaning (POM) as a mediator to explain the association. While dialectical thinking in Eastern cultures values both process and outcome, oppositional thinking in Western cultures makes the two opposing. Since dialectical thinking increases with age, we hypothesize that with increased age, SFM is associated with POM more positively (less negatively). This heightened POM results in better well-being. We surveyed 2014 participants (aged 18-96, Mage= 55.6) in Eastern cultures: Hong Kong and Taiwan; Western cultures: Germany, United States and the Czech Republic. In Eastern cultures, SFM was positively associated with POM and life satisfaction. POM partially mediated the relationship between SFM and life satisfaction (b=0.328, p<.001). With age, SFM was associated more positively with POM and life satisfaction (b=0.009, p<.001). While POM partially mediated the relationship in younger adults (b=0.162, p<.001), full mediation was found in older adults (b=0.451, p<.001). In Western cultures, SFM was negatively associated with POM and life satisfaction. POM partially mediated the relationship between SFM and life satisfaction (b=-0.120, p<.001). With age, the negative association of SFM with POM and life satisfaction was attenuated (b=0.002, p<.001). These finding suggested that SFM becomes more beneficial to older adults across culture via establishing POM. Identifying factors that facilitate the process of achieving meaning through searching is therefore important.

APA, Harvard, Vancouver, ISO, and other styles

47

Heimowitz, Paul. "THE GREAT POM-POM CAPER: WASHINGTON'S FIRST COMPENSATION SCHEDULE APPLICATION." International Oil Spill Conference Proceedings 1995, no. 1 (February 1, 1995): 359–63. http://dx.doi.org/10.7901/2169-3358-1995-1-359.

Full text

Abstract:

ABSTRACT When the Washington State Oil Spill Compensation Schedule was developed as a shortcut to estimating natural resource damages, the concept was applauded. But how has it worked in reality? The first use of the compensation schedule successfully occurred in April 1993, when the Nosac Forest spilled an estimated 6,260 gallons of intermediate fuel oil into Commencement Bay in Tacoma during a fuel transfer. Within eight months, the P&I club representing the ship paid in full the $122,696 damage claim calculated by the compensation schedule. Although running the compensation schedule formulas is straightforward, determining the input values offers several challenges. Because the compensation schedule generates a $1-$50/gallon figure, spill volume is a key factor. Limited information about the oil transfer—a common problem—complicated efforts to measure the amount spilled from the Nosac Forest and led to much time spent gathering and analyzing recovery data to generate an estimate. Another complication of this case was ranking the toxicity of the product. Good coordination of the unified state Resource Damage Assessment Committee with tribal representatives and the responsible party expedited resolution of the damage claim. Through the Nosac Forest experience, the compensation schedule demonstrated its effectiveness in quantifying damages that might otherwise not be addressed, making restoration funds available relatively quickly. This case also taught some helpful lessons regarding data collection needs and ways the regulation can be improved.

APA, Harvard, Vancouver, ISO, and other styles

48

WANG, Wei, Xikui LI, and Xianhong HAN. "RHEOLOGICAL BEHAVIOR OF POM-POM MOLECULES THROUGH PLANAR CONTRACTION FLOW." Acta Polymerica Sinica 010, no. 3 (March 26, 2010): 292–99. http://dx.doi.org/10.3724/sp.j.1105.2010.00292.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Li, Xin-Xiong, Dan Zhao, and Shou-Tian Zheng. "Recent advances in POM-organic frameworks and POM-organic polyhedra." Coordination Chemistry Reviews 397 (October 2019): 220–40. http://dx.doi.org/10.1016/j.ccr.2019.07.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

van Ruymbeke, Evelyne, Michael Kapnistos, Dimitris Vlassopoulos, Tianzi Huang, and Daniel M. Knauss. "Linear Melt Rheology of Pom-Pom Polystyrenes with Unentangled Branches." Macromolecules 40, no. 5 (March 2007): 1713–19. http://dx.doi.org/10.1021/ma062487n.

Full text

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'POM'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles