6,227 research outputs found
S. G. Greer
No full textEarly in his career, Frank B. Bailey was active in Houston in the 1850s and most likey worked as an itinerant photographer traveling to various locations in Texas before setting up a photographic operation in Navasota, Texas from at least 1869-1872. Bailey continued his photographic work in Palestine, Texas, from 1878 until at least 1883, and was also in partnership with Anderson F. Terry in Palestine in 1884-1885. (Palmquist, Peter E. and Thomas R. Kailbourn. Pioneer Photographers from the Mississippi to the Continental Divide a Biographical Dictionary, 1839-1865. Stanford: StanfordUniversity Press, 2005.)Recto: [handwritten] S. G. Greer, To A. M. Johnson. Verso: [imprinted] F. B. Bailey, Photographer, Navasota, Texas
Audiovisual biofeedback improves the correlation between internal/external surrogate motion and lung tumor motion
No full textPurpose: Breathing management can reduce breath-To-breath (intrafraction) and day-by-day (interfraction) variability in breathing motion while utilizing the respiratory motion of internal and external surrogates for respiratory guidance. Audiovisual (AV) biofeedback, an interactive personalized breathing motion management system, has been developed to improve reproducibility of intra-and interfraction breathing motion. However, the assumption of the correlation of respiratory motion between surrogates and tumors is not always verified during medical imaging and radiation treatment. Therefore, the aim of the study was to test the hypothesis that the correlation of respiratory motion between surrogates and tumors is the same under free breathing without guidance (FB) and with AV biofeedback guidance for voluntary motion management. Methods: For 13 lung cancer patients receiving radiotherapy, 2D coronal and sagittal cine-MR images were acquired across two MRI sessions (pre-and mid-Treatment) with two breathing conditions: (a) FB and (b) AV biofeedback, totaling 88 patient measurements. Simultaneously, the external respiratory motion of the abdomen was measured. The internal respiratory motion of the diaphragm and lung tumor was retrospectively measured from 2D coronal and sagittal cine-MR images. The correlation of respiratory motion between surrogates and tumors was calculated using Pearson's correlation coefficient for: (a) abdomen to tumor (abdomen-Tumor) and (b) diaphragm to tumor (diaphragm-Tumor). The correlations were compared between FB and AV biofeedback using several metrics: Abdomen-Tumor and diaphragm-Tumor correlations with/without ≥5 mm tumor motion range and with/without adjusting for phase shifts between the signals. Results: Compared to FB, AV biofeedback improved abdomen-Tumor correlation by 11% (p = 0.12) from 0.53 to 0.59 and diaphragm-Tumor correlation by 13% (p = 0.02) from 0.55 to 0.62. Compared to FB, AV biofeedback improved abdomen-Tumor correlation by 17% (p = 0.01) and diaphragm-Tumor correlation by 15% (p < 0.01) while correcting 0.3 s (p = 0.54) and 0.2 s (p = 0.19) phase shifts, respectively. In addition, AV biofeedback with ≥5 mm tumor motion range, compared to FB improved abdomen-Tumor correlation by 14% (p = 0.18) and diaphragm-Tumor correlation by 17% (p = 0.01). The highest abdomen-Tumor and diaphragm-Tumor correlations were found using ≥5 mm tumor motion range and phase shifts, resulting in a 12% improvement in AV biofeedback. Conclusions: Our results demonstrated that AV biofeedback improves the correlation of respiratory motion between surrogates and the tumor. This suggests a need for AV biofeedback for respiratory guidance utilizing respiratory surrogates during image-guided and MRI-guided radiotherapy in thoracic regions
Peter B. Maling, Christchurch, New Zealand [picture] /
No full textTitle devised from compactus card.; Inscriptions: "Peter B. Maling. Photograph for reference"--On compactus card, "Print U/1633 11535"--In pencil on verso; photographers stamp.; Rex Nan Kivell Collection NK11535.; Also available online http://nla.gov.au/nla.pic-vn6093270. Dr Peter B. Maling is a New Zealand author and historian. He was a friend and correspondent of Rex Nan Kivell
Influences of host community characteristics on Borrelia burgdorferi infection prevalence in Blacklegged ticks
No full textLyme disease is a major vector-borne bacterial disease in the USA. The disease is caused by Borrelia burgdorferi, and transmitted among hosts and humans, primarily by blacklegged ticks (Ixodes scapularis). The ~25 B. burgdorferi genotypes, based on genotypic variation of their outer surface protein C (ospC), can be phenotypically separated as strains that primarily cause human diseases – human invasive strains (HIS) – or those that rarely do – and are non-randomly associated with host species. The goal of this study was to examine the extent to which phenotypic outcomes of B. burgdorferi could be explained by the host communities fed upon by blacklegged ticks. In 2006 and 2009, we determined the host community composition based on abundance estimates of the vertebrate hosts, and collected host-seeking nymphal ticks in 2007 and 2010 to determine the ospC genotypes within infected ticks. We regressed instances of B. burgdorferi phenotypes on site-specific characteristics of host communities by constructing Bayesian hierarchical models that properly handled missing data. The models provided quantitative support for the relevance of host composition on Lyme disease risk pertaining to B. burgdorferi prevalence (i.e., overall nymphal infection prevalence, or NIPAll) and HIS prevalence among the infected ticks (NIPHIS). In 2006, we found positive associations of the relative abundances of mice, of chipmunks, and of shrews with NIPAll. We also found positive associations of NIPHIS with shrews, and with host community diversity (H’), but negative associations with mice, and with chipmunks. In 2009, the relative abundance of mice showed a positive association with NIPAll, whereas the relative abundance of shrews and of H’ showed a negative association. With NIPHIS, only H’ showed a positive association, whereas the relative abundances of mice, of chipmunks, and of shrews, had negative associations. Our study highlights the variability between two years in the effects of host composition on B. burgdorferi genotypes. More importantly, our results highlight how disease risk inference, based on the role of host community, changes when we examine risk overall or at the phenotypic level. Long-term studies will be necessary to detect any consistent effects of host community composition on genotypic variation in the Lyme disease spirochetes
Zechariah 9-14 as the substructure of 1 Peter’s eschatological program
No full textThe principal aim of this study is to discern what has shaped the author of 1 Peter to regard Christian suffering as a necessary (1.6) and to-be-expected (4.12) component of faithful allegiance to Jesus Christ. Most research regarding suffering in 1 Peter has limited the scope of inquiry to two particular aspects—its cause and nature, and the strategies that the author of 1 Peter employs in order to enable his addressees to respond in faithfulness. There remains, however, the need for a comprehensive explanation for the source that has generated 1 Peter’s theology of Christian suffering. If Jesus truly is the Christ, God’s chosen redemptive agent who has come to restore God’s people, then how can it be that Christian suffering is a necessary part of discipleship after his coming, death and resurrection? What led the author of 1 Peter to such a startling conclusion, which seems to runs against the grain of the eschatological hopes and expectations of Jewish restoration ideology?
This thesis analyzes the appropriation of shepherd and fiery trials imagery,
and argues that the author of 1 Peter is dependent upon Zechariah 9-14 for his
theology of Christian suffering. Said in another way, the eschatological program of
Zechariah 9-14, read through the lens of the Gospel, functions as the substructure
for 1 Peter’s eschatology and thus its theology of Christian suffering.
In support of this hypothesis, this study highlights the fact that Zechariah 9-
14 was available and appropriated in early Christianity, in particular in the Passion
Narrative tradition; that the shepherd imagery of 1 Pet 2.25 is best understood
within the milieu of the Passion Narrative tradition, and that it alludes to the
eschatological program of Zechariah 9-14; that the fiery trials imagery found in 1
Peter 1.6-7 and 1 Pet 4.12 is distinct from that which we find in Greco-Roman and OT
wisdom sources, and that it shares exclusive parallels with some unique features of
the eschatological program of Zechariah 9-14; that Zechariah 9-14 offers a more
satisfying explanation for the modification of Isa 11.2 in 1 Pet 4.14, the transition
from 4.12-19 to 5.1-4, why Peter has oriented his letter with the term διασπορά,
and why he has described his addresses as οἶκος τοῦ θεοῦ; and finally that 1 Peter
contains an implicit foundational narrative that shares distinct parallels with the
eschatological program of Zechariah 9-14.
We can conclude that 1 Peter offers a unique vista into the way in which at
least one early Christian witness came to understand and to communicate the fact
that Christian suffering was a necessary feature of faithful allegiance to Jesus Christ
Electron microscopic studies of growth of nanoscale catalysts and soot particles in a candle flame
No full textScanning electron microscopy and high-resolution transmission electron microscopy have been used to investigate non-classic crystal growth of catalytic nanoparticles, such as zeolites, perovskites, metal and alloy particles. Growth mechanisms of some crystals with novel morphologies, for example, BiOBr flower-like particles and ZnO twin-crystals, have also been studied. A development of sampling method for soot particles inside a candle flame allows us to reveal all four well-known carbon forms, amorphous, graphitic, fullerenic and nanodiamond particles. This article demonstrates that electron microscopy is a powerful tool to study the microstructures of small particles, giving us more freedom to develop new materials.Peer reviewe
Quantification of lung tumor rotation with automated landmark extraction using orthogonal cine MRI images
No full textThe quantification of tumor motion in sites affected by respiratory motion is of primary importance to improve treatment accuracy. To account for motion, different studies analyzed the translational component only, without focusing on the rotational component, which was quantified in a few studies on the prostate with implanted markers. The aim of our study was to propose a tool able to quantify lung tumor rotation without the use of internal markers, thus providing accurate motion detection close to critical structures such as the heart or liver. Specifically, we propose the use of an automatic feature extraction method in combination with the acquisition of fast orthogonal cine MRI images of nine lung patients. As a preliminary test, we evaluated the performance of the feature extraction method by applying it on regions of interest around (i) the diaphragm and (ii) the tumor and comparing the estimated motion with that obtained by (i) the extraction of the diaphragm profile and (ii) the segmentation of the tumor, respectively. The results confirmed the capability of the proposed method in quantifying tumor motion. Then, a point-based rigid registration was applied to the extracted tumor features between all frames to account for rotation. The median lung rotation values were -0.6 ± 2.3° and -1.5 ± 2.7° in the sagittal and coronal planes respectively, confirming the need to account for tumor rotation along with translation to improve radiotherapy treatment
Peter Kean to Susan Niemcewicz August 9, 1809
No full textPeter Kean wrote from Albany, New York to Susan Niemcewicz in Elizabethtown, New Jersey. After a most charming ride with Mrs. Banyer, Mr. Ridley, Sally Jay, and Susan Livingston, Susan’s letter together with Papa’s arrived as if to crown the happiness of the day. Thanked Susan for the assurances and good advice. It was important to Peter to know Susan’s reasons for him not reposing confidence in Mrs. Bz. As the confidence originated on the part of Sally Jay and she said she would consult her on the subject. Mrs. B. had in a measure become the only organ by which Peter could discover Sally’s thoughts as it respected the object he most earnestly desired to obtain. Peter discovered no change of sentiments and relied upon the bounty and goodness of God. Susan said she was reading Seneca and Peter claimed that while he was a charming and beautiful author, he was a pagan and not too fit a source to derive the precepts of true wisdom. Tom Grimké passed through Albany on his way to Balltown and informed Peter that he left his father’s family well and that Colonel Shubrick had not yet commenced the suit, neither had anything been done by Mr. B about the Paris Island Land.
People mentioned: Mrs. Banyer, Mr. Ridley, Sarah Louisa Jay (1792-1818), Susan Livingston, Mrs. B., Thomas Smith Grimké (1786-1834), and Colonel Shubrick.https://digitalcommons.kean.edu/lhc_1800s/1493/thumbnail.jp
Tales of the Hoy [electronic resource] : interspersed with song, ode, and dialogue. By Peter Pindar, Esq.
No full textPeter Pindar = John Wolcot.Verse.On p. 64: "End of Part I.".Price from imprint: price three shillings. N. B. An clegant Engraving of the Author is prefixed to each Number, (entered at Stationers-Hall.At foot of titlepage: "N.B. An elegant engraving of the author is prefixed to each number"Electronic reproduction.English Short Title Catalog,Reproduction of original from British Library
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