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Journal articles on the topic 'PM elements'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

SAITOH, K., K. SERA, J. GOMEZ PERALES, F. ANGELES GARCIA, and H. SUZUKI. "CHARACTERIZATION OF FINE PARTICLE COMPONENTS IN MEXICO CITY." International Journal of PIXE 09, no. 03n04 (1999): 387–96. http://dx.doi.org/10.1142/s0129083599000498.

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Particulate matter (PM-3.9 and PM-15.8) samples were collected in the three zones at the Northeast, Southwest and Southeast suburbs of Mexico City, from July to August 1998, for one week for each sampling site. The concentrations of several elements in the PM-3.9 and PM-15.8 samples were determined by Particle Induced X-ray Emission (PIXE). In the PM-3.9 samples, 21 elements were determined for each zone, and Na , Mg , Al , Si , S , K , Ca , Ti , Fe , Cu , Zn and Pb are found to be the major elemental components. On the other hand, 22 elements including P were determined on the PM-15.8 samples

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2

Howie, John M., and M. Paula O. Marques-Smith. "A nilpotent-generated semigroup associated with a semigroup of full transformations." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 108, no. 1-2 (1988): 181–87. http://dx.doi.org/10.1017/s0308210500026615.

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SynopsisLet X be a set with infinite regular cardinality m and let ℱ(X) be the semigroup of all self-maps of X. The semigroup Qm of ‘balanced’ elements of ℱ(X) plays an important role in the study by Howie [3,5,6] of idempotent-generated subsemigroups of ℱ(X), as does the subset Sm of ‘stable’ elements, which is a subsemigroup of Qm if and only if m is a regular cardinal. The principal factor Pm of Qm, corresponding to the maximum ℱ-class Jm, contains Sm and has been shown in [7] to have a number of interesting properties.Let N2 be the set of all nilpotent elements of index 2 in Pm. Then the s

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3

Cachon, Fresnel Boris, Fabrice Cazier, Anthony Verdin, et al. "Physicochemical Characterization of Air Pollution Particulate Matter (PM2.5 and PM>2.5) in an Urban Area of Cotonou, Benin." Atmosphere 14, no. 2 (2023): 201. http://dx.doi.org/10.3390/atmos14020201.

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PM2.5 and PM>2.5 samples were collected in Cotonou (Benin) using high volume cascade impaction air samplers. The samplings were based on continuous collection over twelve days. Physical and chemical characteristics of samples were determined by size distribution (laser granulometry), specific surface areas (BET method), inorganic elements (ICP-MS), water-soluble ions (IC), CHNS analysis and organic compounds (GC-MS). Average concentrations of air particulate matter were 180.9 µg/m3 and 94.5 µg/m3 in PM2.5 and PM>2.5, respectively. The higher water-soluble ions recorded were Ca2+,SO42−,NO

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Nocoń, Katarzyna, Wioletta Rogula-Kozłowska, and Kamila Widziewicz. "Research on chromium and arsenic speciation in atmospheric particulate matter: short review." E3S Web of Conferences 28 (2018): 01026. http://dx.doi.org/10.1051/e3sconf/20182801026.

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Atmospheric particulate matter (PM) plays an important role in the distribution of elements in the environment. The PM-bound elements penetrates into the other elements of the environment, in two basic forms - those dissolved in the atmospheric precipitation and those permanently bound to PM particles. Those forms differs greatly in their mobility, thus posing a potential threat to living organisms. They can also be an immediate threat, while being inhaled. Chromium (Cr) and arsenic (As) belong to the group of elements whose certain chemical states exhibit toxic properties, that is Cr(VI) and

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Li, Xing, Tingting Xu, and Ying Guo. "Considering the Size Distribution of Elements in Particle Matter and Oxidation Potential: Association before and after Respiratory Exposure." Atmosphere 15, no. 4 (2024): 411. http://dx.doi.org/10.3390/atmos15040411.

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Oxidation potential (OP), reflecting the redox activities of particle matter (PM), is considered an optimal measure to explain the biological effects of PM exposure. However, the size resolution of the relationship between OP and chemical composition in PM, especially how the relationship changes after respiratory exposure, has not been well investigated. In this study, size-resolved indoor PM10 samples were collected from a waste recycling plant from November to December 2021 using an Anderson eight-stage cascade impactor. OP, measured by a dithiothreitol (DTT) assay (defined as OPDTT), and e

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Salminen, M., P. Maire, J. P. Concordet, et al. "Fast-muscle-specific expression of human aldolase A transgenes." Molecular and Cellular Biology 14, no. 10 (1994): 6797–808. http://dx.doi.org/10.1128/mcb.14.10.6797-6808.1994.

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The expression of the human aldolase A gene is controlled by three alternative promoters. In transgenic mice, pN and pH are active in all tissues whereas pM is activated specifically in adult muscles composed mainly of fast, glycolytic fibers. To detect potential regulatory regions involved in the fast-muscle-specific activation of pM, we analyzed DNase I hypersensitivity in a 4.3-kbp fragment from the 5' end of the human aldolase A gene. Five hypersensitive sites were located near the transcription initiation site of each promoter in those transgenic-mouse tissues in which the corresponding p

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Salminen, M., P. Maire, J. P. Concordet, et al. "Fast-muscle-specific expression of human aldolase A transgenes." Molecular and Cellular Biology 14, no. 10 (1994): 6797–808. http://dx.doi.org/10.1128/mcb.14.10.6797.

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The expression of the human aldolase A gene is controlled by three alternative promoters. In transgenic mice, pN and pH are active in all tissues whereas pM is activated specifically in adult muscles composed mainly of fast, glycolytic fibers. To detect potential regulatory regions involved in the fast-muscle-specific activation of pM, we analyzed DNase I hypersensitivity in a 4.3-kbp fragment from the 5' end of the human aldolase A gene. Five hypersensitive sites were located near the transcription initiation site of each promoter in those transgenic-mouse tissues in which the corresponding p

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Ayala, Pablo, and Arturo Woocay Prieto. "Preventive Maintenance in the 3D Atomic IV Printer Machine using the Analytic Hierarchy Process." Estudios y Perspectivas Revista Científica y Académica 4, no. 3 (2024): 14–37. http://dx.doi.org/10.61384/r.c.a..v4i3.366.

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Preventive maintenance (PM) of equipment is a crucial aspect of effective manufacturing systems, as inadequate PM can lead to various negative issues, such as quality, productivity cost, customer cost, and maintenance costs. This paper presents a case study approach using the Analytic Hierarchy Process (AHP) and ranking of critical elements for the PM equipment of a 3D Atomic IV printer machine at The Instituto Tecnológico de Ciudad Juárez. AHP was used to find the equipment problem sensors and determine all the criteria weights and rank elements. The principal methodology is applied to a 3D A

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Lan, Xiao Yu, Qing Yang Guan, and Yan Zou. "A Fast DOA Algorithm Based on Propagator Method and Rotation Array." Applied Mechanics and Materials 614 (September 2014): 352–55. http://dx.doi.org/10.4028/www.scientific.net/amm.614.352.

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It is known that computational complexity of the propagator method (PM) can be significantly smaller than those of MUSIC and ESPRIT because the PM does not require any eigenvalue decomposition (EVD) of the received data. However, most the algorithm based on PM requires more antenna elements than targets. In order to solve these issues, a novel low energy algorithm utilizing array base-line rotation for multiple targets estimation is proposed. By rotating two elements and setting a fixed time delay, even number of elements is selected to form a virtual UCA. Then, the received data of signals wi

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Cibula, Robert, Michal Holubčík, Dušan Jandačka, Nikola Čajová Kantová, and Ján Sovík. "Particulate Matter (PM) - Reliable, Fast and Economical Method for Determining the Elements Bound in PM." Advances in Thermal Processes and Energy Transformation 6, no. 4 (2023): 59–64. http://dx.doi.org/10.54570/atpet2023/06/04/0059.

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Chemical analysis of filters used in the study of air pollution is an important part of research in the field of monitoring the level of air pollution, mainly due to the influence of human activity (study of the composition of solid particles). When selecting an appropriate technique (including appropriate sample preparation), it is necessary, that the chosen method provides reliable and accurate results. In addition, to the accuracy and sensitivity of the technique, given the number of analyzed samples, it is already required that the analysis procedure be economical, ecological, and fast eno

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Stefanovic, Nenad, and Dusan Stefanovic. "Supply chain performance measurement system based on scorecards and web portals." Computer Science and Information Systems 8, no. 1 (2011): 167–92. http://dx.doi.org/10.2298/csis090608018s.

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Successful supply chain management becomes essential for the ultimate success of corporations. Companies today seek an effective performance measurement (PM) system to maximize the bottom line. Unfortunately, performance measurement in the supply-chain field has not kept pace with today?s world of interdependent business relationships. What companies need is a new PM system that unifies different business elements, concepts, technologies and tools. In this paper, the architecture of such a pervasive PM system is introduced. The main system elements such as process model, metrics and data wareh

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Jandacka, Dusan, Matej Brna, Daniela Durcanska, and Matus Kovac. "Characterization of Road Dust, PMx and Aerosol in a Shopping–Recreational Urban Area: Physicochemical Properties, Concentration, Distribution and Sources Estimation." Sustainability 15, no. 17 (2023): 12674. http://dx.doi.org/10.3390/su151712674.

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Road transport is a source of exhaust and non-exhaust emissions of particulate matter (PM). Non-exhaust PM emissions include road surface wear, tires, brakes and road dust resuspension. An important part of PM in urban air consists of particles that originate from the resuspension of road dust. This study focused on the analysis of the physicochemical properties of road dust and PM10, PM2.5 and PM1 (PMx) in the air (size, concentration, distribution, content of chemical elements), the properties of urban aerosol (number, mass and area distribution), and at the same time, the interconnection be

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Zaremba, Roman, Ute Ch Rodewald, and Rainer Pöttgen. "Transition Metal-centered Trigonal Prisms as BuildingUnits in RE14T3In3 (RE = Y, Ho, Er, Tm, Lu; T = Pd, Ir, Pt) and Y4IrIn." Zeitschrift für Naturforschung B 62, no. 12 (2007): 1574–80. http://dx.doi.org/10.1515/znb-2007-1216.

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The indides RE14T3In3 (RE = Y, Ho, Er, Tm, Lu; T = Pd, Ir, Pt) and Y4IrIn were synthesized from the elements by arc-melting and subsequent annealing for crystal growth. Their structures were characterized on the basis of X-ray powder and single crystal data: Lu14Co3In3-type, space group P42/nmc, a = 970.2(1), c = 2340.7(5) pm for Y13.95Pd3In3.05, a = 959.7(1), c = 2309.0(5) pm for Ho14Pd2.95In3, a = 955.5(1), c = 2305.1(5) pm for Er14Pd3In3, a = 950.9(1), c = 2291.6(5) pm for Tm13.90Pd3In3.10, a = 944.4(1), c = 2275.5(5) pm for Lu13.93Pd3In3.07, a = 962.9(1), c = 2343.0(5) pm for Y13.86Ir2.97I

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Rogula-Kozłowska, Wioletta, Karolina Kuskowska, Paweł Ogrodnik, and Magdalena Penkała. "Traffic-generated changes in the elemental profile of urban coarse dust at a highway and crossroads." E3S Web of Conferences 45 (2018): 00074. http://dx.doi.org/10.1051/e3sconf/20184500074.

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Based on literature data, the percentage contribution of road traffic to concentrations of particulate matter (PM) and PM-bound elements, separately for PM2.5-10 and PM10-100 fractions were assessed. The data on the PM2.5-10 and PM10-100 concentrations examined simultaneously at two locations (the 1st outside the direct impact of the road emission; the 2nd next to a crossroads or highway) were used in the analysis. There were clear differences in the concentrations of PM and its components between these locations (a crossroads vs. background; highway vs. background). Both PM concentrations and

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15

Rodewald, Ute Ch, Birgit Heying, Rolf-Dieter Hoffmann, Dirk Niepmann, and Rainer Pöttgen. "Platinum-Germanium Ordering in the Germanides REPtGe with the Heavy Rare Earth Elements." Zeitschrift für Naturforschung B 64, no. 4 (2009): 383–87. http://dx.doi.org/10.1515/znb-2009-0404.

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The equiatomic germanides REPtGe with the heavy rare earth elements (RE) have been reinvestigated with respect to platinum-germanium ordering. The compounds were prepared by arc-melting of the elements followed by annealing for two weeks at 1070 K. The REPtGe germanides crystallize with the TiNiSi-type structure, space group Pnma. The structures of ErPtGe (a = 692.01(5), b = 432.03(4), c = 753.19(5) pm, wR2 = 0.0523, 435 F2, 20 variables) and the new germanide LuPtGe (a = 683.1(1), b = 429.2(1), c = 750.3(1) pm, wR2 = 0.0696, 358 F2, 20 variables) have been refined from single crystal diffract

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16

Liu, Yong, Yan Bin Liu, Bin Wang, and Hui Ping Tang. "Rare Earth Element: Is it a Necessity for PM Ti Alloys?" Key Engineering Materials 520 (August 2012): 41–48. http://dx.doi.org/10.4028/www.scientific.net/kem.520.41.

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To lower the cost, Ti alloys fabricated by elemental powder metallurgy have been widely studied. High contents of oxygen and residual porosities are usually inevitable in as-sintered Ti alloys. Thus, rare earth elements are added to PM Ti alloys for scavenging of oxygen, increasing sintered density and strengthening the matrix. This paper reviews recent studies on the effects of rare earth elements (La and Y) on the densification behaviours, mechanical properties and high temperature oxidation resistance of PM Ti alloys. The improvement of room temperature ductility of PM Ti alloys through the

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17

Devanathan, G., and K. D. Krishnanand. "Computer Aided Design and Drafting of PM Tool Elements." Key Engineering Materials 29-31 (January 1991): 707–16. http://dx.doi.org/10.4028/www.scientific.net/kem.29-31.707.

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18

Ubaidullah A., Idris M. M., Ango M. L., et al. "A Study of the Levels of Nickel, Iron, Cadmium, and Lead in Some Potable Drinking Water from Well Sources in Dutsin-ma, Katsina State, Nigeria." Asian Journal of Research and Reviews in Physics 7, no. 4 (2023): 10–16. http://dx.doi.org/10.9734/ajr2p/2023/v7i4145.

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This study looked into the levels of heavy metal concentrations (Ni, Fe, Cd, and Pb) in a portable well water sample from Dutsin-ma, Katsina State. A water sampler bottle was used to gather ten water samples from various randomly chosen wells. By adding HNO3, and HCl, heating the samples to 90°C and then cooling them, the samples were digested. Heavy elements were measured using a calibrated Atomic Absorption Spectrophotometer. The result indicates that the heavy metal concentration levels in a well water sample from Dutsimma, Katsina State for Ni, Fe, Cd, and Pb are in the range (mean) values

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Luís, R., and J.C. Quadrado. "On PM Tubular Linear Synchronous Motor Modelling." WSEAS Trans. on Circuits and Systems 3, no. 9 (2004): 1852–57. https://doi.org/10.5281/zenodo.1215049.

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In this paper a new approach is made on PM tubular linear synchronous motor (PM-TLSM) modelling, considering a non linear model. This model allows the incorporation of PM elements characteristics. The straight forward approach induces robust simulation results for tubular linear machines, without resorting to complex variable transformations.

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Shu, Mushui, Xiaohui Ji, Yu Wang, et al. "Characterization and Source Apportionment of PM in Handan—A Case Study during the COVID-19." Atmosphere 14, no. 4 (2023): 680. http://dx.doi.org/10.3390/atmos14040680.

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Handan is a typical city affected by regional particulate pollution. In order to investigate particulate matter (PM) characterization, source contributions and health risks for the general populations, we collected PM samples at two sites affected by a pollution event (12–18 May 2020) during the COVID-19 pandemic and analyzed the major components (SNA, OCEC, WSIIs, and metal elements). A PCA-MLR model was used for source apportionment. The carcinogenic and non-carcinogenic risks caused by metal elements in the PM were assessed. The results show that the renewal of old neighborhoods significant

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Viskup, Richard, Yana Vereshchaga, Anna Theresia Stadler, et al. "Spectrochemical Analytical Characterisation of Particulate Matter Emissions Generated from In-Use Diesel Engine Vehicles." Environmental Sciences Proceedings 4, no. 1 (2020): 18. http://dx.doi.org/10.3390/ecas2020-08468.

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Pollutant emissions from vehicles form major sources of metallic nanoparticles entering the environment and surrounding atmosphere. In this research, we spectrochemically analyse the chemical composition of particle matter emissions from in-use diesel engine passenger vehicles. We extracted diesel particulate matter from the end part of the tail pipes of more than 70 different vehicles. In the laboratory, we used the high-resolution laser-induced breakdown spectroscopy (LIBS) spectrochemical analytical technique to sensitively analyse chemical elements in different DPM samples. We found that P

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Gudat, Axel, Sabine Haag, Rüdiger Kniep, and Albrecht Rabenau. "Ternäre Nitride des Lithiums mit den Elementen Cr, Mo und W / Ternary Lithium Nitrides with Elements Cr, Mo and W." Zeitschrift für Naturforschung B 45, no. 2 (1990): 111–20. http://dx.doi.org/10.1515/znb-1990-0203.

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The ternary compounds were prepared by reaction of the transition metals with Li3N melt under nitrogen. The crystal structures of Li6MeN4 (P42/nmc, Z = 2; Me = Mo: a = 667.3(1) pm, c = 492.5(3) pm; Me = W: a = 667.9(1) pm, c = 492.7(1) pm) and Li15Cr2N9 (P4/ncc, Z = 4; a = 1023.3(5) pm, c = 938.9(7) pm) can be described as fluorite-type superstructures with the lithium and transition metal atoms in tetrahedral holes of the nearly fcc nitrogen arrangement and with an ordered distribution of defects within the cation substructure. In addition, the ternary system Li–Cr–N contains the compound Li6

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Sara, Y. Y., M. Rashid, T. G. Chuah, M. Suhaimi, and N. N. Mohamed. "Characteristics of Airborne Pm_2.5 and Pm_2.5-10 in the Urban Environment of Kuala Lumpur." Advanced Materials Research 620 (December 2012): 502–10. http://dx.doi.org/10.4028/www.scientific.net/amr.620.502.

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Gravimetric and elemental analyses were conducted at a site in Kuala Lumpur from 2008 to 2010, representing the local air quality of urban and traffic. Eighteen elements were detected by ED-XRF and was further analysed for enrichment factor and correlation study. About 19.7% elements were identified and detected in PM10, including 8.2% and 11.5% in fine and coarse fractions, respectively. Al was found predominant in coarse fraction. However its composition in PM2.5was highly enriched pointed to some anthropogenic emission source. In fine particulates, the total mass was mostly dominated by Al,

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Kim, Hong-Sik. "An Understanding on Suits “The Elements of Sport”." Journal of the Korean Society for the Philosophy of Sport, Dance, & Martial Arts’ 30, no. 4 (2022): 35–55. http://dx.doi.org/10.31694/pm.2022.12.30.4.002.

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25

周, 应辉. "Stability of Generalized Maximal Elements under Strong Perturbations." Pure Mathematics 13, no. 12 (2023): 3638–45. http://dx.doi.org/10.12677/pm.2023.1312377.

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Jandacka, Dusan, and Daniela Durcanska. "Seasonal Variation, Chemical Composition, and PMF-Derived Sources Identification of Traffic-Related PM1, PM2.5, and PM2.5–10 in the Air Quality Management Region of Žilina, Slovakia." International Journal of Environmental Research and Public Health 18, no. 19 (2021): 10191. http://dx.doi.org/10.3390/ijerph181910191.

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Particulate matter (PM) air pollution in the urban environment is mainly related to the presence of potential sources throughout the year. Road transport is one of the most important sources of PM in the urban environment, because it directly affects pedestrians. PM measurements were performed in the city of Žilina, Slovakia, at various road-traffic-related measurement stations over the course of several years. This paper evaluates changes in the concentration of the fine fraction (PM2.5), the ultrafine fraction (PM1), and the coarse fraction (PM2.5–10) over time. PM concentrations were measur

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Heying, Birgit, Ute Ch Rodewald, and Bernard Chevalier. "The Stannides RE2Ni2Sn (RE = Pr, Ho, Er, Tm) – Structural Transition from the W2B2Co to the Mo2B2Fe Type as a Function of the Rare Earth Size." Zeitschrift für Naturforschung B 68, no. 1 (2013): 10–16. http://dx.doi.org/10.5560/znb.2013-2296.

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The stannides RE2Ni2Sn (RE=Pr, Ho, Er, Tm) were synthesized by arc-melting of the elements and characterized by powder X-ray diffraction. Pr2Ni2Sn crystallizes with the orthorhombic W2B2Co-type structure, Immm, a=443.8(1), b=572.1(1), c=855.1(2) pm, wR2=0.0693, 293 F2 values, 13 variables. A structural transition to the tetragonal Mo2B2Fe type occurs for the heavier rare earth elements. The structures of Ho2Ni2Sn (a=729.26(9), c=366.66(7) pm, wR2=0.0504, 250 F2 values, 12 variables), Er2Ni2Sn (a=727.2(2), c=364.3(1) pm, wR2=0.0397, 262 F2 values, 12 variables), and Tm2Ni2Sn (a=725.2(1), c=362.

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Hryha, Eduard, and Lars Nyborg. "Microstructure Development in Powder Metallurgy Steels: Effect of Alloying Elements and Process Variables." Materials Science Forum 782 (April 2014): 467–72. http://dx.doi.org/10.4028/www.scientific.net/msf.782.467.

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Microstructure of the powder metallurgy (PM) steels and especially mechanism of its formation differs significantly from the microstructure of the conventional steels even if composition will be exactly the same. The difference is not only connected to the presence of the pores, which are inalienable feature of the PM parts. Presence of the prior inter-particle boundaries, which can be contaminated by residual oxides, as well as microstructure heterogeneity are another characteristic features of the microstructure of PM steels. Microstructure heterogeneity is connected to the PM manufacturing

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Marques-Smith, M. Paula O., and R. P. Sullivan. "Nilpotents and congruences on semigroups of transformations with fixed rank." Proceedings of the Royal Society of Edinburgh: Section A Mathematics 125, no. 2 (1995): 399–412. http://dx.doi.org/10.1017/s0308210500028092.

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In 1988, Howie and Marques-Smith studied Pm, a Rees quotient semigroup of transformations associated with a regular cardinal m, and described the elements which can be written as a product of nilpotents in Pm. In 1981, Marques proved that if Δm denotes the Malcev congruence on Pm, then Pm/Δm is congruence-free for any infinite m. In this paper, we describe the products of nilpotents in Pm when m is nonregular, and determine all the congruences on Pm when m is an arbitrary infinite cardinal. We also investigate when a nilpotent is a product of idempotents.

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Geroldinger, S., R. de Oro Calderon, C. Gierl-Mayer, and H. Danninger. "Sinter Hardening PM Steels Prepared through Hybrid Alloying." HTM Journal of Heat Treatment and Materials 76, no. 2 (2021): 105–19. http://dx.doi.org/10.1515/htm-2020-0007.

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Abstract In powder metallurgy (PM), there are several ways of introducing alloying elements into a PM material in order to adjust a certain alloying element content. Each alloying route has its advantages and disadvantages. Master alloys (MA), powders with a high content of typically several alloying elements, can be added in small amounts to a base powder, especially to introduce oxygen sensitive elements such as Cr, Mn, and Si. In addition, the master alloy can be designed in such a way that a liquid phase is formed intermediately during the sintering process to improve the distribution of a

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Lee, Woo-Jae. "A Study on the Dionysian Elements in Break Dancing." Journal of the Korean Society for the Philosophy of Sport, Dance, & Martial Arts’ 27, no. 3 (2019): 73–83. http://dx.doi.org/10.31694/pm.2019.09.27.3.006.

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Fukushima, T., K. Amano, and K. Muraoka. "Factors Explaining Sediment Concentrations of 16 Elements in 28 Japanese Eutrophic Lakes." Water Science and Technology 23, no. 1-3 (1991): 465–74. http://dx.doi.org/10.2166/wst.1991.0446.

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To understand lake sediment environments, the concentrations of 16 elements in sediments and suspended particulate matter (PM) from 28 Japanese eutrophic lakes were analyzed. Use of some statistical analysis permitted them to be grouped into a) alkali metals and alkaline earth metals (Na, Mg, Ca, Sr, K), b) elements originating from soil particles or rock (Ti, Fe), c) elements having significant anthropogenic inputs (P, Cr, Cu, Zn), d) organic carbon and nitrogen. The ratio of PM to sediments decreased in the order c), d), a) and b). With the aid of a simple conceptual model, some significant

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Eisenmann, B., and M. Somer. "Intermetallische Verbindungen mit HgCl2-isosteren Anionen: Strukturelle und schwingungsspektroskopische Untersuchung von Na4HgP2, K4ZnP2, K4CdP2 und K4HgP2 / Intermetallic Compounds with HgCl2 Isoelectronic Anions: Crystal Structure and Vibrational Spectra of Na4HgP2, K4ZnP2, K4CdP2 and K4HgP2." Zeitschrift für Naturforschung B 44, no. 10 (1989): 1228–32. http://dx.doi.org/10.1515/znb-1989-1015.

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The new compounds Na4HgP2, K4ZnP2 and K4HgP2 are isotypic and crystallize in the rhombohedral system, space group R3m, Z = 3, with the lattice constants: Na4HgP2: a = 500.8(2) pm, c = 2544.7(8) pm, c/a = 5.081; K4ZnP2: a = 566.4(2) pm, c = 2610.1(8) pm, c/a = 4.608; K4HgP2: a = 567.1(2) pm, c = 2697.7(8) pm, c/a = 4.757. The crystal structure of the compound K4CdP2, formerly described in the monoclinic system (space group C2/m), has been revised (R3m, a = 568.1(2) pm, c = 2698.4(8) pm, c/a = 4.750). Linear units [P—T—P]4- with T = Zn, Cd, Hg, which are isoelectronic to the molecule HgCl2, repr

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Nilsson, Johan O., Mikael Leetmaa, Olga Yu Vekilova, Sergei I. Simak, and Natalia V. Skorodumova. "Oxygen diffusion in ceria doped with rare-earth elements." Physical Chemistry Chemical Physics 19, no. 21 (2017): 13723–30. http://dx.doi.org/10.1039/c6cp06460d.

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ZHAO, H., T. LIANG, J. ZHANG, Z. LI, and C. TANG. "Research on graphite powders used for HTR-PM fuel elements." Rare Metals 25, no. 6 (2006): 347–50. http://dx.doi.org/10.1016/s1001-0521(07)60103-x.

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Xiangwen, Zhou, Lu Zhenming, Zhang Jie, et al. "Preparation of spherical fuel elements for HTR-PM in INET." Nuclear Engineering and Design 263 (October 2013): 456–61. http://dx.doi.org/10.1016/j.nucengdes.2013.07.001.

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Solomon, A. A., and S. M. McDeavitt. "Preparation of uranium-zirconium alloy nuclear fuel elements by PM." Metal Powder Report 47, no. 11 (1992): 55. http://dx.doi.org/10.1016/0026-0657(92)90978-n.

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Nabeel, M., R. Frykholm, and P. Hedström. "Influence of alloying elements on Ni distribution in PM steels." Powder Metallurgy 57, no. 2 (2013): 111–18. http://dx.doi.org/10.1179/1743290113y.0000000078.

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Schnelle, Walter, Reinhard K. Kremer, Rolf-Dieter Hoffmann, Ute Ch Rodewald, and Rainer Pöttgen. "Crystal Structure and Magnetic Ordering Transitions in CeNiIn4, EuNiIn4 and EuCuIn4." Zeitschrift für Naturforschung B 69, no. 9-10 (2014): 1003–9. http://dx.doi.org/10.5560/znb.2014-4192.

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Abstract Polycrystalline CeNiIn4 was prepared by arc-melting of the elements and subsequent annealing at 970 K in vacuum. EuNiIn4 and EuCuIn4 were synthesized from the elements by reactions in sealed tantalum tubes. These indium-rich compounds crystallize with the YNiAl4-type structure which was refined for EuCuIn4 from single-crystal X-ray diffraction data: Cmcm, a=450:04(9), b=1698:7(4), c = 740:2(2) pm, wR2 = 0:0606, 495 F2 values, 24 variables. The EuCuIn4 structure is built up from a complex three-dimensional [CuIn4] polyanion (265 - 279 pm Cu-In and 296 - 331 pm In- In) in which the euro

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Ermawati, R., I. Setiawati, Irwinanita, and A. Ariani. "Physicochemical properties of particulate matter (PM2.5) from the steel industry in Indonesia." IOP Conference Series: Earth and Environmental Science 951, no. 1 (2022): 012032. http://dx.doi.org/10.1088/1755-1315/951/1/012032.

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Abstract Particulate matter (PM) as one of the pollutants in the atmosphere needs to be studied. PM has physical and chemical characteristics and is called physicochemical properties. These properties vary depending on the source of the PM. PM samplers are used for air sampling to characterize some fine particles (PM2.5). The PM2.5 samples have collected from four sampling sites in the steel industry in Cilegon, Indonesia. The sampling sites are the main gate, the hot strip mill, the billet post, and the hot blast plant. The sampling period was four months. The physicochemical properties analy

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Voßwinkel, Daniel, and Rainer Pöttgen. "Synthesis of Ce2Rh3Ge5 Crystals from a Bismuth Flux." Zeitschrift für Naturforschung B 68, no. 3 (2013): 301–5. http://dx.doi.org/10.5560/znb.2013-3015.

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The germanide Ce2Rh3Ge5 was synthesized from the elements in a bismuth flux, and the structure was refined from single-crystal X-ray diffractometer data: U2Co3Si5 type, Ibam, a = 1010:1(2), b = 1210:4(2), c = 599:1(1) pm, wR=0.0596, 760 structure factors, 31 variables. The rhodium and germanium atoms build up a three-dimensional [Rh3Ge5] network (242 - 269 pm Rh-Ge; 300 pm Rh-Rh; 266 pm Ge-Ge) in which the cerium atoms fill cavities. Each cerium atom has coordination number 17 by ten germanium (302 - 331 pm) and seven rhodium (320 - 355 pm) neighbors. The crystal-chemical relation of the Ce2Rh

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Altankhuyag, Maralmaa. "Source Apportionment of Air Particulate Matter in Ulaanbaatar City (2017–2019) Using Positive Matrix Factorization." Физик сэтгүүл 38, no. 621 (2025): 40–48. https://doi.org/10.22353/physics.v38i621.10086.

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In the study, the source apportionment of ambient particulate matter was conducted using Positive Matrix Factorization (PMF) based on measurement data from 176 samples of PM₂.₅ and PM₁₀–₂.₅ collected during the winter seasons of 2017–2019 in Ulaanbaatar city. The input dataset included concentrations of 17 chemical elements and black carbon. The PMF results revealed five major sources for both PM₂.₅ and PM₁₀–₂.₅: soil dust (34.8% and 59.2%), coal combustion (39.8%, 18.1%), vehicular emissions (8.1%, 8.5%), petroleum-related sources (4.4%, 2.7%), and industrial emissions (12.9%, 11.6%), respect

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Saratun, Molraudee. "Performance management to enhance employee engagement for corporate sustainability." Asia-Pacific Journal of Business Administration 8, no. 1 (2016): 84–102. http://dx.doi.org/10.1108/apjba-07-2015-0064.

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Purpose – The purpose of this paper is to examine literature in order to explore the reasons why performance management (PM) positively affects employee engagement (EE) as well as how PM should be conducted to achieve EE. It also provides future research suggestions. Design/methodology/approach – Derived from substantial literature review, approaches describing how three PM processes (performance agreement, on-going feedback, and performance evaluation) can enhance EE are discussed. Findings – Throughout the three PM processes, the following should be applied to foster EE: employee development

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Shirmohammadi, Farimah, Sina Hasheminassab, Dongbin Wang, et al. "The relative importance of tailpipe and non-tailpipe emissions on the oxidative potential of ambient particles in Los Angeles, CA." Faraday Discussions 189 (2016): 361–80. http://dx.doi.org/10.1039/c5fd00166h.

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This study examines the associations between the oxidative potential of ambient PM<sub>2.5</sub>and PM<sub>0.18</sub>, measured by means of the dithiothreitol (DTT) assay, and their chemical constituents and modeled sources. Particulate matter (PM) samples were collected from 2012–2013 in Central Los Angeles (LA) and 2013–2014 in Anaheim, California, USA. Detailed chemical analyses of the PM samples, including carbonaceous species, inorganic elements and water-soluble ions, were conducted. Univariate analysis indicated a high correlation (R> 0.60) between the DTT activity and the concentrat

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施, 旭. "Calculation and Application of Generalized Inverse Based on Matrix Elements." Pure Mathematics 14, no. 03 (2024): 158–63. http://dx.doi.org/10.12677/pm.2024.143095.

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Blase, Wolfgang, Gerhard Cordier, Volker Müller, Ulrich Häußermann, Reinhard Nesper, and Mehmet Somer. "Präparation und Kristallstrukturen von Rb8In11, K8Tl11 und Rb8Tl11sowie Bandstrukturrechnungen zu K8In11 / Preparation and Crystal Structures of Rb8In11, K8Tl11, and Rb8Tl11 Band Structure Calculations on K8In11." Zeitschrift für Naturforschung B 48, no. 6 (1993): 754–60. http://dx.doi.org/10.1515/znb-1993-0609.

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The isotypic compounds K8In11, Rb8In11, K8Tl11, and Rb8Tl11 were prepared from the elements. The crystal structures were determined by single crystal X-ray diffraction methods. (K8In11: a = 1002.1(3), c = 5089.1(8) pm; Rb8In11: a = 1030.1(3), c = 5236.7(7) pm; Κ8Τl11: a = 999.1(3), c = 5084.8(7) pm; Rb8Tl11: a = 1028.0(3), c = 5230.5(7) pm, R3̄c, Z = 6). The crystal structures contain In11- and Tl11-clusters, respectively, of pentacapped trigonal prisms. Band structure calculations on K8In11 confirm an [In11]7-“anion”, with one excess electron per In11-cluster involved in alkalimetal-earthmeta

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Karnes, Jonathan, and Robert Mortlock. "Aligning Program Management Competencies to Industry Standards." Reimagining Program Management 28, no. 98 (2021): 366–419. http://dx.doi.org/10.22594/10.22594/dau.21-868.28.04.

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The 2020 National Defense Authorization Act mandated that acquisition career fields realign their certification requirements to be based on the nationally recognized standards of an accredited third party. This study offers recommendations for improving the DoD program management (PM) training standards by providing traceability between the DoD PM competencies and the Project Management Institute (PMI)’s standards for project, program, and portfolio management. The study elaborates on the extent of alignment, finding that 96% of the DoD PM competency elements align to PMI standards. Areas of m

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Karnes, First Lt Jonathan L., and COL Robert F. Mortlock. "Aligning Program Management Competencies to Industry Standards." Reimagining Program Management 28, no. 98 (2021): 366–419. http://dx.doi.org/10.22594/dau.21-868.28.04.

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The 2020 National Defense Authorization Act mandated that acquisition career fields realign their certification requirements to be based on the nationally recognized standards of an accredited third party. This study offers recommendations for improving the DoD program management (PM) training standards by providing traceability between the DoD PM competencies and the Project Management Institute (PMI)’s standards for project, program, and portfolio management. The study elaborates on the extent of alignment, finding that 96% of the DoD PM competency elements align to PMI standards. Areas of m

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Doğan, Ahmet, and Rainer Pöttgen. "The Ordered Laves Phases CeNi4Cd and RECu4Cd (RE = Ho, Er, Tm, Yb)." Zeitschrift für Naturforschung B 60, no. 5 (2005): 495–98. http://dx.doi.org/10.1515/znb-2005-0503.

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The ternary ordered Laves phases CeNi4Cd and RECu4Cd (RE = Ho, Er, Tm, Yb) were synthesized by induction-melting of the elements in sealed tantalum tubes. The compounds were characterized by X-ray powder and single crystal diffraction: MgCu4Sn type, F 4̄3m, a = 706.9(2) pm for CeNi4Cd, a = 723.1(2) pm for HoCu4Cd, a = 717.7(3) pm for ErCu4Cd, a = 714.2(1) pm for TmCu4Cd, and a = 713.10(7) pm for YbCu4Cd. The nickel and copper atoms build up threedimensional networks of corner-sharing Ni4/2 and Cu4/2 tetrahedra. These networks leave voids of coordination number 16 that are filled with the rare

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Voßwinkel, Daniel, and Rainer Pöttgen. "Rhodium-rich silicides RERh6Si4 (RE=La, Nd, Tb, Dy, Er, Yb)." Zeitschrift für Naturforschung B 72, no. 11 (2017): 775–80. http://dx.doi.org/10.1515/znb-2017-0073.

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AbstractPolycrystalline RERh6Si4 (RE=La, Nd, Tb, Dy, Er, Yb) samples can be synthesized by arc-melting of the elements. Single crystals of LaRh6Si4, NdRh6Si4 and YbRh6Si4 were synthesized from the elements in bismuth fluxes (non-reactive flux medium). The structures were refined on the basis of single-crystal X-ray diffractometer data: LiCo6P4 type, P6̅m2, a=700.56(3), c=380.55(1) pm, wR2=0.0257, 317 F2 values, 19 variables for LaRh6Si4, a=698.4(5), c=377.7(2) pm, wR2=0.0578, 219 F2 values, 19 variables for NdRh6Si4 and a=696.00(3), c=371.97(1) pm, wR2=0.0440, 309 F2 values, 19 variables for Y

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