Naugatuck Valley Community College

Modern crocodilians and birds are the only living representatives of the Archosauria, a group that also includes non-avian dinosaurs and pterosaurs. Modern crocodilians originated during the early Cretaceous period and dispersed globally. Examples of physiological similarities between living crocodilians and birds include similar amino acids in β-keratins among crocodiles, turtles and birds; oviduct homologies between crocodilians and birds; similar forelimb structures in crocodiles and other archosaurs and similarities in gene expression in limb development in alligators and chickens. While individual crocodilian species have adapted their behaviours to meet specific strategies for survival in specific habitats, core reproductive behaviours are universal among modern crocodilians and transcend speciation, morphology and geographic distribution. Hard-wired core behaviours include social signals that incorporate chemosensory, auditory and mechanoreception modalities; construction of a temperature-stabilising nest chamber to incubate eggs; and parental care of their young. Parental care may reflect a primitive character for archosaurs, including dinosaurs. Crocodilians use integumentary sense organs (ISOs) during courtship and in parental care, and similar structures may have had similar functions in dinosaurs. The presence of numerous foramina (possible ISOs) in the skulls of saurischians, along with the findings of fossilised nests with adults, may indicate similar complex behaviours, including parental care, in dinosaurs.

Climate change is a significant threat to human health across the life cycle. Nurses play an important role in mitigation, adaptation, and resilience to climate change. The use of health care resources, air quality and extreme heat, mental health, and natural disasters are major content areas across undergraduate nursing curricula that influence or are influenced by climate change. Teaching strategies and resources are offered to prepare nursing students to address climate change and human health.

Theories of self-efficacy and self-regulation were used to examine scores from an instrument that measures self-efficacy for using self-regulatory study strategies. The authors investigated the dimensionality of responses to the Study Skills Self-Efficacy Scale using exploratory factor analysis and Rasch measurement. They also investigated the utility of the Rasch measures in differentiating between groups of students who report being academically successful or at risk. The participants were 550 social science students at a midsized northeastern community-technical college. Results indicated that responses define three related dimensions and that measures were able to differentiate between students reporting to be academically successful or at risk. Additional items need to be developed to increase measurement precision along various portions of the self-efficacy dimensions.

In order to evaluate the acceptability and potential impact of the Passion-Driven Statistics curriculum, this article describes background characteristics, and course experiences and outcomes of students enrolled in the multidisciplinary, introductory, project-based course in liberal arts colleges, large state universities, regional college/universities, and community colleges. We found that the course could be successfully delivered across these diverse educational settings. After controlling for educational setting and pre-survey responses to individual outcome measures, consistent predictors of positive course outcomes included student’s initial interest in conducting research, their higher likelihood of enrolling in a statistics course if it were not required, finding the project-based course less challenging, and finding the research project more rewarding than other students. Regional college/university, and community college students reported working significantly harder in the course and finding the course more challenging than students taking the course at liberal arts colleges or state universities. Students from liberal arts colleges generally reported more positive course experiences than students from other educational settings. However, when compared to students from both liberal arts colleges and large state universities, those from regional colleges/universities reported being more likely to have learned more in the project-based course than in other college courses they had taken. Taken together, the project-based course was successfully delivered across diverse post-secondary educational settings and provides a promising model for getting students hooked on the power and excitement of applied statistics.

The results in brief … Maleic hydrazide has been found to have selective herbicidal action on weedy grasses. Young plants are more susceptible to injury by it than are old plants. This relation of maturity to injury applies to crop plants as well as to weedy grasses. Maleic hydrazide is particularly toxic to grass species. It affects plants when applied at low concentration; it causes growth abnormalities; it apparently acts on plant meristems at a distance from the point of application. For these reasons, it is concluded that maleic hydrazide has hormone properties. Addition of a wetting agent increases the effects of maleic hydrazide, presumably by improving the contact with the plant tissues. Many vegetable crops show growth inhibition from maleic hydrazide treatment; growth abnormalities occur on some. On tomato, the abnormalities resemble virus symptoms. A common response to maleic hydrazide is anthocyanin pigmentation. This might result from carbohydrate accumulation in the leaves.

Journal Article Debt's Dominion: A History of Bankruptcy Law in America Get access Skeel David A.Jr.Debt's Dominion: A History of Bankruptcy Law in America. Princeton: Princeton University Press, 2001. xi, 281 pp. $80.00 (cloth); $22.95 (paper). Barbara A. Mathews Barbara A. Mathews Pocumtuck Valley Memorial Association Search for other works by this author on: Oxford Academic Google Scholar American Journal of Legal History, Volume 48, Issue 2, April 2006, Pages 224–226, https://doi.org/10.2307/25434796 Published: 01 April 2006

(Isothiazol-5-yl)diarylcarbinols were prepared from 5-lithioisothiazole. (Thiazol-5-yl)diarylcarbinols were obtained via 5-lithio-2-bromothiazole or 5-lithio-2-trimethylsilylthiazole with subsequent removal of the 2-substituent. Corresponding 2-aminothiazol-5-ylcarbinols were made by protecting 2-aminothiazole as its bis(trimethylsilyl) derivative. Biological activities were compared to the calculated electron densities at the heterocyclic N-atoms.

Nurses are responsible for ensuring that short-term enteral feeding tubes are placed correctly before using them for gastric emptying, enteral nutrition, or medication administration. This article reviews evidence-based methods for assessing tube placement and discusses the limitations of each method with a focus on nasogastric tube placement.

Abstract The crosslink density in polybutadiene has been determined by measurement of the polymer molecular weight by osmometry and the primary chain molecular weight by modifier analysis involving radioactive materials. Since the number of polymer molecules is equal to the number of primary chains less the number of crosslinkages, the experimental measurements may be used to calculated the crosslink density. This method can be used to determine crosslink density at a combination of conversions, modifier loadings, and polymerization temperatures which could not be done by other methods. Branching and cyclic structure forming crosslinks are not measured by this method, the principal assumption of which is that one and only one modifier fragment is attached to each primary chain. Initiation and termination processes tend to reduce the validity of this assumption, but these have been minimized by reduction of the amounts of initiator and found insignificant by comparison of different systems. Modifiers which react with polymer in nonterminal positions also reduce the validity so that primary dodecyl mercaptan was not satisfactory as a modifier in this work, while tertiary alkyl mercaptans were. Also, diisopropyl xanthogen disulfide was not satisfactory because of secondary reactions. The crosslink density of polybutadiene prepared in emulsion decreases with decreasing polymerization temperature. At a given molecular weight, the crosslink density does not appear to be a function of conversion within the range studied. At a given polymerization temperature, increasing polymer number average molecular weight was accompanied by increasing crosslink density although the rate of such increase was smaller at subfreezing polymerization temperatures. These results agree with kinetic theory of crosslinking in emulsion polymerization, but actual values are higher than those obtained in comparable systems by the gel point method.

Abstract The reaction of a tertiary amine with cyanogen bromide was first described in 1900 by Julius von Braun who elaborated the reaction to such an extent that it bears his name. Generally, a tertiary amine reacts with cyanogen bromide to yield an alkyl bromide and a disubstituted cyanamide. The direct conversion of secondary amines to disubstituted cyanamides with cyanogen bromide proceeds in low yield because some of the amine is converted to its hydrobromide. The material in this chapter is limited to a discussion of the reaction of tertiary amines with cyanogen bromide.

Spatial and temporal genetic structure of the eastern oyster Crassostrea virginica was examined along the coast of North Carolina (NC); utilizing a fragment of the mitochondrial large (16S) ribosomal subunit gene sequence known to distinguish three regional haplotypes in C. virginica—North Atlantic, South Atlantic, and Gulf of Mexico. Significant geographic genetic structure was identified among all populations studied, with little temporal genetic variation observed over the 9-y sampling period. The results are consistent with those of previous studies analyzing geographic variation in mitochondrial DNA16S sequence data, which revealed a genetic discontinuity between North and South Atlantic oyster assemblages along the NC Coast. The increased geographic resolution and duration of sampling in this study revealed a sustained significant shift in genetic composition between Pamlico Sound populations and southern NC populations of C. virginica. These results suggest that a prolonged or persistent barrier impacting larval dispersal or post settlement survival exists between these regions limiting gene flow between North and South Atlantic oyster assemblages.

Nursing communication is vital to quality and safe nursing care. Evidence continues to increase that communication breakdowns are responsible for medication errors, unnecessary costs, and inadequate patient care. Nursing students can be taught enhanced communication skills during clinical conferences using innovative teaching strategies, examples of which are described in this article.

Abstract It is well known to production people and to process engineers engaged in manufacturing rubber products that the output of curing operations can be greatly increased by elevating the temperature of vulcanization. For example, work done in the 1920's led to the curing of rubber-covered wire at 400° F using a continuous vulcanization (CV) process. Highly accelerated compounds capable of complete vulcanization in 15 seconds at 400° F are used in the wire industry. More recently the application of high temperature vulcanization methods has been vigorously pressed in the tire industry. While exact curing cycles are closely guarded secrets, it can be stated that passenger tires are vulcanized at temperatures up to 388° F (200 psi steam pressure) using press cycles of the order of 15 to 25 minutes' duration. New automatic presses which shape and then cure the tires at high temperatures—for example, Bagomatic tire curing press, McNeil Machinery & Engineering Co., Akron, Ohio—permit large economies in labor and productivity. Further reductions in curing cycles are anticipated, since the process engineers and rubber technologists continue to develop improved methods of high temperature curing. At this time it appears that the trend to higher temperature vulcanization will not only continue but tend to expand into other lines of rubber products. Considering the economic advantages which a given company may gain by a major advance in high temperature curing of tires or other rubber goods, it is not surprising that there have been only a few disclosures on high temperature curing technology.

In this paper we describe project-based laboratories in Mechanical Engineering designed to provide semester-long team experiences which mimic the real life industrial processes of design, development, testing and optimization. The labs are focused on courses at the sophomore level and thus require special attention to constraints of student backgrounds and experience. This paper describes laboratory projects in Dynamics and Fluid Mechanics.

Abstract A study of factors which affect the results obtained with the constant slip abrader in evaluation of abrasion resistance properties of GR-S vulcanizates has revealed the following : 1. As might be expected, abrasion losses decrease with increase in 300 per cent modulus. 2. Losses increase approximately logarithmically as the amount of slip between the test and abrasive wheels increases. 3. The abrasion losses decrease with increase in talcing rate, due to “lubrication” of the abrasive wheel by the talc as long as the rate is sufficient to keep the wheel free of loose abraded material. 4. Indications are that abrasion losses may increase with increase of coefficients of friction of test wheels against the abrasion wheel. 5. In a study of the effect of ambient temperature on constant slip abrasion losses, the losses increased as the temperature was raised from −10 to 30° C for GR-S 1500, GR-S 1503, and for high Mooney-viscosity GR-S 1500 extended with a naphthenic extender oil, and the losses remained essentially constant for the Resin-731 extended high Mooney viscosity GR-S 1500. The Resin-731 extended stock changed only slightly with temperature and, consequently, its comparative rating increased rapidly with rise of temperature. It was noted in photomicrographs of the wheel surfaces that the abrasion pattern which was evident at normal temperatures was absent or at best poorly defined at the lower temperatures, indicating a possible difference in kind of abrasion at low temperatures than at normal temperatures. 6. Latex masterbatches of oil and black that had been premixed by several different methods gave vulcanizates with constant-slip abrasion resistance superior to similar masterbatches prepared in the usual manner. 7. The constant-slip abrader was found to be useful in evaluating new SAF blacks and in the evaluation of the effect of using dispersing agents in carbon black and extender-carbon black masterbatching by the latex procedure.

We have synthesized LiMn2–xFexO4 (x = 0, 0.25, and 0.50) cathode materials for applications in Li ion rechargeable batteries via sol-gel method. We studied thermal characteristics of as synthesized materials using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). In order to optimize the synthesis conditions, we studied X-ray diffraction (XRD) of synthesized cathode materials at various temperatures, based on the transitions obtained from DSC/TGA. The XRD results can be co-related to the thermal behavior of the synthesized cathode materials and the synthesis conditions optimized.

In Brief Employing effective communication strategies described here can improve the quality of patient care and reduce stress for the patient, staff, and family members alike.

The purpose of this study was to test the effect of a motivational message on the intention of laypersons to learn cardiopulmonary resuscitation (CPR) and automated external defibrillator (AED) use. A pretest-posttest, double-blind, randomized design was used with 220 community-dwelling adults. Participants were randomly assigned to the treatment group reading the CPR and AED pamphlet emphasizing learning CPR and AED use to save someone they love and the 3-minute window for response time; or to the comparison group reading the identical pamphlet without the 2 motivational statements. Intention to learn CPR and AED use and to look for AEDs in public areas was measured before and after reading the respective pamphlet. No significant difference emerged between the groups for the number of participants planning to learn CPR and AED use. A significant number of participants in both groups increased intention to learn CPR and AED use. Significantly more treatment participants than comparison participants planned to routinely look for AEDs in public areas after reading the pamphlet, however. Teaching critical facts such as the low survival rate for out-of-hospital cardiac arrest might encourage laypersons to learn CPR and AED use. Routinely teaching family members of people at risk for a cardiac arrest about the short window of time in which CPR and AED use must begin and encouraging them to learn about CPR and AEDs to save someone they love may encourage family members to identify the location of AEDs in public places.

A slightly modified version of the chromatogram analysis procedure of Pickett, Cantow, and Johnson (1) is used to obtain molecular weight distributions from polystyrene chromatograms. Results for combined-fraction chromatograms of known distributions indicated that this method greatly increased chromatogram resolution. For NBS Standards 705 and 706, results showed that good values of Mw, Mn, and [η] could be calculated from the corrected chromatogram. We also show that for a series of different polymer fractions reverse-flow and normal narrow-fraction chromatogram widths are independent of polymer type and depend only on peak elution volume. Chromatogram widths of fractions of narrow-distribution polymers obtained by elution chromatography approach reverse-flow chromatogram widths confirming that reverse flow widths are representative of monodisperse polymers.

Abstract It has been shown that it is possible to prepare high-solids latex by polymerizing to an intermediate solids content and particle size, followed by solvent agglomeration and concentration. It has also been shown that a somewhat similar agglomeration normally takes place at intermediate conversions in conventional high-solids latex recipes. The slow rates of polymerization in the latter recipes after agglomeration are primarily due to the greatly reduced number of particles present. The ratio of hydrocarbon to water is very important in determining the extent of agglomeration both during and after polymerization.