Comment on mesic-atom Auger-rate calculation

1983 ◽  
Vol 28 (1) ◽  
pp. 455-458
Author(s):  
A. Altman ◽  
Z. Fried
Keyword(s):  
Mesic Atom ◽  
Rate Calculation

Evaluation of Distribution Network Customer Outage Costs

2009 ◽  
Vol 25 (25) ◽  
pp. 7-12 ◽  
Author(s):  
Laila Zemīte ◽  
Jānis Gerhards
Keyword(s):  
Distribution Network ◽  
Mean Value ◽  
Estimation Model ◽  
Energy Assessment ◽  
Calculation Results ◽  
Rate Calculation

Evaluation of Distribution Network Customer Outage CostsCustomer outage cost criteria are considered, collected and analyzed outage costs in Latvia distribution network, as well as distribution network outage elimination structure, the most common outage causes, are proposed outage costs estimation model. Finally the discussion of results of expected customer outage costs and interrupted energy assessment rate calculation results in Latvia distribution network in 2007 are presented, based on customers' mean value of incomes, outcomes and profitability.

Modified Edge Lift-Off Test: Experimental Modifications for Multifilm Systems

1999 ◽  
Vol 594 ◽  
Author(s):  
J. C. Hay ◽  
E. G. Liniger ◽  
X-H Liu
Keyword(s):  
Energy Release Rate ◽  
Energy Release ◽  
Release Rate ◽  
Strain Energy ◽  
Plate Bending ◽  
Adhesion Test ◽  
Testing Method ◽  
Rate Calculation ◽  
Lift Off ◽  
Microelectronics Fabrication

AbstractIn developing an adhesion test for a microelectronics fabrication facility there are many criteria which must be met. Some of these include (i) sample prep must be simple, (ii) deformations should be elastic so the problem can be easily modeled, (iii) mechanics are ideally analytical, and (iv) the test end-point must be unambiguous and easy to obtain. A testing method in the literature which meets many of these criteria is the modified edge liftoff test (MELT). Delamination is induced through the release of strain energy stored in an elastic superlayer which results from a large mismatch in CTE between the film and substrate. In this work we consider details of the energy release rate calculation, effects of plate bending, and initial flaw size.

Accuracy of heart strain rate calculation derived from Doppler tissue velocity data

2001 ◽  
Author(s):  
Andres Santos ◽  
Maria J. Ledesma-Carbayo ◽  
Norberto Malpica ◽  
Manuel Desco ◽  
Jose C. Antoranz ◽  
...  
Keyword(s):  
Strain Rate ◽  
Velocity Data ◽  
Tissue Velocity ◽  
Rate Calculation

P2-007: Automating the BSI brain atrophy rate calculation: Comparison of using automated and semi-automated brain regions

2008 ◽  
Vol 4 ◽  
pp. T367-T368
Author(s):  
Matthew C. Evans ◽  
Casper Nielsen ◽  
Abdel Douiri ◽  
Josephine Barnes ◽  
Shona L. Clegg ◽  
...  
Keyword(s):  
Brain Atrophy ◽  
Brain Regions ◽  
Atrophy Rate ◽  
Rate Calculation

scholarly journals Quantitative Assessment of 3D Dose Rate for Proton Pencil Beam Scanning FLASH Radiotherapy and Its Application for Lung Hypofractionation Treatment Planning

Cancers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 3549
Author(s):  
Minglei Kang ◽  
Shouyi Wei ◽  
J. Isabelle Choi ◽  
Charles B. Simone ◽  
Haibo Lin
Keyword(s):  
Dose Rate ◽  
Treatment Planning ◽  
Organs At Risk ◽  
Patient Treatment ◽  
Average Dose ◽  
Clinical Implementation ◽  
Flash Intensity ◽  
Dose Threshold ◽  
Rate Calculation ◽  
The Impact

To quantitatively assess target and organs-at-risk (OAR) dose rate based on three proposed proton PBS dose rate metrics and study FLASH intensity-modulated proton therapy (IMPT) treatment planning using transmission beams. An in-house FLASH planning platform was developed to optimize transmission (shoot-through) plans for nine consecutive lung cancer patients previously planned with proton SBRT. Dose and dose rate calculation codes were developed to quantify three types of dose rate calculation methods (dose-averaged dose rate (DADR), average dose rate (ADR), and dose-threshold dose rate (DTDR)) based on both phantom and patient treatment plans. Two different minimum MU/spot settings were used to optimize two different dose regimes, 34-Gy in one fraction and 45-Gy in three fractions. The OAR sparing and target coverage can be optimized with good uniformity (hotspot < 110% of prescription dose). ADR, accounting for the spot dwelling and scanning time, gives the lowest dose rate; DTDR, not considering this time but a dose-threshold, gives an intermediate dose rate, whereas DADR gives the highest dose rate without considering any time or dose-threshold. All three dose rates attenuate along the beam direction, and the highest dose rate regions often occur on the field edge for ADR and DTDR, whereas DADR has a better dose rate uniformity. The differences in dose rate metrics have led a large variation for OARs dose rate assessment, posing challenges to FLASH clinical implementation. This is the first attempt to study the impact of the dose rate models, and more investigations and evidence for the details of proton PBS FLASH parameters are needed to explore the correlation between FLASH efficacy and the dose rate metrics.

Indexing of powder diffraction patterns for low-symmetry lattices by the successive dichotomy method

1991 ◽  
Vol 24 (6) ◽  
pp. 987-993 ◽  
Author(s):  
A. Boultif ◽  
D. Louër
Keyword(s):  
Success Rate ◽  
Powder Diffraction ◽  
Input Parameter ◽  
Mathematical Treatment ◽  
Monoclinic Symmetry ◽  
Unit Cells ◽  
Rate Calculation ◽  
Diffraction Patterns ◽  
Low Symmetry ◽  
Very High

The dichotomy method for indexing powder diffraction patterns for low-symmetry lattices is studied in terms of an optimization of bound relations used in the comparison of observed data with the calculated patterns generated at each level of the analysis. A rigorous mathematical treatment is presented for monoclinic and triclinic cases. A new program, DICVOL91, has been written, working from the cubic end of the symmetry sequence to triclinic lattices. The search of unit cells is exhaustive within input parameter limits, although a few restrictions for the hkl indices of the first two diffraction lines have been introduced in the study of triclinic symmetry. The efficiency of the method has been checked by means of a large number of accurate powder data, with a very high success rate. Calculation times appeared to be quite reasonable for the majority of examples, down to monoclinic symmetry, but were less predictable for triclinic cases. Applications to all symmetries, including cases with a dominant zone, are discussed.

Sign in / Sign up

Export Citation Format

Share Document