Formation of mixed types of diamonds in the Fe-Co-Mg-C growth system at HTHP-crystallization

2021 ◽  
Vol 28 (2) ◽  
Keyword(s):  
Growth System ◽  
Mixed Types

CONVECTIVE INSTABILITY IN CRYSTAL GROWTH SYSTEM

2002 ◽  
Vol 12 (12) ◽  
pp. 187-221 ◽  
Author(s):  
Koichi Kakimoto ◽  
Nobuyuki Imaishi
Keyword(s):  
Crystal Growth ◽  
Convective Instability ◽  
Growth System

Increased Stability of Anaerobic Digestion by Controlled Recirculation

1991 ◽  
Vol 23 (7-9) ◽  
pp. 1229-1237
Author(s):  
Chaio-Fuei Ouyang ◽  
Tain-Gen Chang
Keyword(s):  
Substantial Reduction ◽  
Gas Production ◽  
Digested Sludge ◽  
Significant Saving ◽  
Methane Generation ◽  
Sludge Digestion ◽  
Solids Concentration ◽  
Secondary Sludge ◽  
Sludge Recycling ◽  
Growth System

The treatment characteristics of municipal sludge were investigated by the anaerobic activated sludge digestion (AASD) system. This study used the suspended growth system and mesophilic temperature in the digestors and separators; the system achieves a more stable and improved process; such a process configuration offers the possibility of a substantial reduction in the total volume necessary for efficient stabilization. This study presents data indicating that the AASS system is feasible. In general, with an applied solids concentration of TS= 2%, the nonbiodegradable portion of the substrate concentration contained in the primary and secondary sludge was found to be 40.6% and 35.1% on the basis or TVS and COD, respectively. This study also provides evidence that the reactions at a recycling ratio of R=1 and R=3 are considerably more stable than those achieved in conventional or other recycling ratio digestors with a HRT of 9 days or longer. The gas production and bioactivity is also higher than that normally produced by the conventional single-stage digestion system. The experimental results also indicate that the dilution rate exceeds the maximum specific growth rate as the HRT is decreased from 9 days to 6 days. The significant saving in reactor volume and enhanced methane generation should offset the energy required for digested sludge recycling.

scholarly journals Relationships of Hydrological Seasons in Rivers and Groundwaters in Selected Catchments in Poland

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 250
Author(s):  
Przemysław Tomalski ◽  
Edmund Tomaszewski ◽  
Dariusz Wrzesiński ◽  
Leszek Sobkowiak
Keyword(s):  
River Flow ◽  
Geographical Location ◽  
Base Flow ◽  
Water Shortages ◽  
Groundwater Levels ◽  
Average Value ◽  
Geographical Regions ◽  
New Variables ◽  
Mixed Types

The study applied the method of hydrological season identification in a time series of river total and base flows and in groundwater levels. The analysis covered a series of daily measurements from the period 2008–2017 in nine catchments located in different geographical regions of Poland. The basis of the classification of hydrological seasons, previously applied for river discharges only, was the transformation of the original variables into a series reflecting three statistical features estimated for single-name days of a year from a multiyear: average value, variation coefficient, and autocorrelation coefficient. New variables were standardized and after hierarchical clustering, every day of a year had a defined type, valorizing three features which refer to quantity, variability, and the stochastic nature of total and base river flow as well as groundwater stage. Finally, sequences of days were grouped into basic (homogenous) seasons of different types and transitional seasons including mixed types of days. Analysis indicated determinants of types, length, and frequency of identified hydrological seasons especially related to river regime, hydrogeological and hydrometeorological conditions as well as physiographical background were directly influenced by geographical location. Analysis of the co-occurrence of the same types of hydrological seasons allowed, in some catchments, periods of synchronic alimentation (groundwater and base flow, mainly in the cold half-year) and water shortages (all three components, mainly in the warm half-year) to be identified.

Options for Transpiration Water Removal in a Crop Growth System Under Zero Gravity Conditions

1991 ◽  
Author(s):  
C. C. Blackwell ◽  
M. Kliss ◽  
B. Yendler ◽  
B. Borchers ◽  
Boris S. Yendler ◽  
...  
Keyword(s):  
Crop Growth ◽  
Water Removal ◽  
Zero Gravity ◽  
Growth System

High capability, quasi-closed growth system for isothermal vapour phase epitaxy of (Hg, Cd)Te

1988 ◽  
Vol 161 ◽  
pp. 157-169 ◽  
Author(s):  
J. Piotrowski ◽  
Z. Nowak ◽  
M. Grudzien ◽  
W. Galus ◽  
K. Adamiec ◽  
...  
Keyword(s):  
Vapour Phase ◽  
Vapour Phase Epitaxy ◽  
Growth System
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