•Monoecious hydrilla shoot lengths increased 32 cm during ten dark development weeks.•Dry weight decreased by 10 mg after ten weeks of dark exposure.•Starch was the most prominent non-structural ...carbohydrate.•Starch levels were highest in plants prior to germination (31% of dry weight).
Hydrilla verticillata is one of the most problematic invasive submersed aquatic weeds in the United States. A study was conducted in growth chambers to look at aspects of development of monoecious Hydrilla verticillata in complete darkness. A single tuber was placed in each of forty-eight growth chambers. Following differential blackout intervals of zero, two, four, six, eight, or ten weeks, plants in each treatment group were dissected into above ground (shoot) and below ground (tuber) material. Plant section length, dry weight, and non-structural carbohydrate content were determined. Shoot lengths increased by 32.1 cm following ten weeks of dark exposure, as compared to the zero-darkness exposure controls. Despite the increase in total shoot length, total dry weight decreased from 34.6 mg (zero-darkness) to 25.4 mg after ten weeks of dark exposure. During this time, tuber dry weight declined from 34.6 mg (zero-darkness) to 5.8 mg and shoot dry weight increased from 0 mg (zero-darkness) to 20 mg. Starch was the most prominent non-structural carbohydrate present in plants throughout the experiment. Starch levels were highest in plants prior to germination (31% of dry weight) and declined significantly and steadily over the course of the 10-week dark development experiment to an average of 20% of dry weight. The results of this study indicate that monoecious hydrilla has a high elongation and development potential over long periods of time in darkness. This adaptation is advantageous in overcoming light blocking management techniques and in allowing the species to occupy a larger area of the profundal zone.
The role of Decorin in organising the extracellular matrix was examined in normal human corneas and in corneas from patients with Congenital Stromal Corneal Dystrophy (CSCD). In CSCD, corneal ...clouding occurs due to a truncating mutation (c.967delT) in the decorin (DCN) gene. Normal human Decorin protein and the truncated one were reconstructed in silico using homology modelling techniques to explore structural changes in the diseased protein. Corneal CSCD specimens were also examined using 3-D electron tomography and Small Angle X-ray diffraction (SAXS), to image the collagen-proteoglycan arrangement and to quantify fibrillar diameters, respectively. Homology modelling showed that truncated Decorin had a different spatial geometry to the normal one, with the truncation removing a major part of the site that interacts with collagen, compromising its ability to bind effectively. Electron tomography showed regions of abnormal stroma, where collagen fibrils came together to form thicker fibrillar structures, showing that Decorin plays a key role in the maintenance of the order in the normal corneal extracellular matrix. Average diameter of individual fibrils throughout the thickness of the cornea however remained normal.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
Introduction/Objectives:
Despite compelling evidence of clinical and economic benefits, adherence to colorectal cancer (CRC) screening remains low. Increasing public awareness through various ...outreach methods may improve screening uptake. The objective of this study was to evaluate the uptake of non-invasive multi-target stool DNA (mt-sDNA) by different outreach methods in an average-risk employer population.
Methods:
This retrospective observational study included CRC screening-eligible individuals aged ≥50 years insured by the Metropolitan Nashville Public Schools (MNPS) employee healthcare plan. The study intervention arms included population-based outreach and office visit-based interaction. The mt-sDNA completion rate (proportion of individuals who return the mt-sDNA kit after consenting to have it shipped to their home), proportion of patients who performed follow-up colonoscopy after a positive test, and time to follow-up colonoscopy were assessed.
Results:
A total of 167 mt-sDNA kits were shipped to eligible participants (aged 50-64 years) in the population-based outreach arm. In the office visit-based interaction arm, a total of 132 mt-sDNA kits were shipped to eligible participants (aged ≥50 years). The mt-sDNA completion rate was significantly higher for office visit-based interaction as compared to population-based outreach (76.8% vs 53.5%; P < .001) among those aged 50 to 64 years. While all patients aged 50 to 64 years with a positive mt-sDNA result received a follow-up colonoscopy in both arms, the median time to follow-up colonoscopy was shorter among the population-based outreach (55 vs 136 days; P < .05).
Conclusions:
Office visit-based interaction was associated with a higher mt-sDNA completion rate as compared to the population-based outreach among average-risk, CRC screening-eligible individuals aged 50 to 64 years old.
We present new low-resolution HI spectral line imaging, obtained with the Karl G. Jansky Very Large Array, of the star-forming Magellanic irregular galaxy UGCA 105. This nearby (D = 3.39 + or - 0.25 ...Mpc), low-mass (M sub(HI) = 4.3 + or - 0.5 x 10 super(8)M sub(middot in circle)) system harbors a large neutral gas disk (HI radius ~7.2 kpc at the N sub(HI) = 10 super(20) cm super(-2) level) that is roughly twice as large as the stellar disk at the B-band R sub(25) isophote. We explore the neutral gas dynamics of this system, fitting tilted ring models in order to extract a well-sampled rotation curve. The rotation velocity rises in the inner disk, flattens at 72 + or - 3 km s super(-1), and remains flat to the last measured point of the disk (~7.5 kpc). The dynamical mass of UGCA 105 at this outermost point, (9 + or - 2) x 10 super(9)M sub(middot in circle), is ~10 times as large as the luminous baryonic components (neutral atomic gas and stars). The proximity and favorable inclination (55degrees) of UGCA 105 make it a promising target for high-resolution studies of both star formation and rotational dynamics in a nearby low-mass galaxy.
This doctoral project sought to answer the following question: What are effective factors of evangelism for reaching emerging adults in Northern California? This group, 18-29, twentysomethings, are ...the most unchurched group in America. By focusing on Northern California, including the most unchurched region in the United States, the San Francisco Bay Area, and the greater Sacramento metro area, this project identified ministries that were successfully engaging and spiritually grounding this generation of emerging adults. Two small surveys suggested that there were two key factors in reaching this group. One survey, designed by the researcher, targeted megachurches—over 2,000 in weekly attendance. The second survey, sponsored by the Sacramento District Church of the Nazarene, was sent to churches ranging in size from 200 to 1,500. These surveys suggested that two factors may be effective in reaching emerging adults: first, significant relationships within an authentic Christian community and, second, planning evangelistic opportunities using a spiritual discussion format addressing apologetic issues and questions.
Isabella Bird traveled to the wildest places on earth, but at home in Britain she lay in bed, hardly able to write: 'an invalid at home and a Samson abroad.'In Japan she rode on a 'yezo savage' ...through foaming floods along unbeaten tracks, and was followed in the city by a crowd of a thousand, whose clogs clattered 'like a hailstorm' as they vied for a glimpse of the foreigner. She documented America before and after the Civil War and was deported from Korea with only the tweed suit she stood up in during a Japanese invasion. In China she was attacked with rocks and sticks and called a foreign dog, but she never gave up and went home. 'The prospect of the unknown has its charms.'Transformed by distant lands, she crossed raging floods, rode elephants, cows and yak, clung to her horse's neck as it clambered down cliff paths, slept on simple mats on the bare ground, unable to change out of wet clothes or get out of the searing heat.Her travels and the books she wrote about them show courage and tenacity, fueled by a restless spirit and a love of nature. She is as unique now as she was then.
This book throws a searchlight on a kind of sociopolitical aggression frequently experienced but never before adequately recognized in political theory.
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