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The article highlights the attributes of the Ulmus hybrid 'Columella,' prized for its resistance to Dutch Elm Disease and suitability for urban planting, owing to its narrow crown and adaptability to diverse soil conditions.

Block-structured mesh generation techniques have been well addressed in the CFD community for automobile and aerospace studies, and their applicability to magnetic fusion is highly relevant, due to the complexity of the plasma-facing wall structures inside a tokamak device. Typically applied to non-linear simulations of MHD instabilities relevant to magnetically confined fusion, the JOREK code was originally developed with a 2D grid composed of isoparametric bi-cubic Bézier finite elements, that are aligned to the magnetic equilibrium of tokamak plasmas (the third dimension being represented by Fourier harmonics). To improve the applicability of these simulations, the grid-generator has been generalised to provide a robust extension method, using a block-structured mesh approach, which allows the simulations of arbitrary domains of tokamak vacuum vessels. Such boundary-aligned grids require the adaptation of boundary conditions along the edge of the new domain. Demonstrative non-linear simulations of plasma edge instabilities are presented to validate the robustness of the new grid, and future potential physics applications for tokamak plasmas are discussed. The methods presented here may be of interest to the wider community, beyond tokamak physics, wherever imposing arbitrary boundaries to quadrilateral finite elements is required. [ABSTRACT FROM AUTHOR]

The article discusses the efforts in Great Britain to save elm trees from being cut down to give way to road widening projects. It narrates the author's experience in joining a successful effort to save an elm tree, known as Elmo, with the support of Member of Parliament Caroline Lucas. It also enumerates the five things urban trees do such as cleaning the air, reducing floods, and keeping air cool.

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In this paper, a new Wiener model is presented for identification and control of single-input single-output (SISO) nonlinear systems. The proposed Wiener model consists of a linear Laguerre filter in cascaded with an extreme learning machine (ELM) neural network (called Laguerre-ELM Wiener model). Laguerre filter can approximate a stable linear system to any degree of accuracy with a small number of Laguerre filters, which provides a parsimony structure and high level accuracy simultaneously. To determine the appropriated number of Laguerre filters in Laguerre-ELM Wiener model, Lipschitz quotient criterion is adapted to determine the order of linear part. A generalized ELM algorithm is proposed to estimate the parameters of Laguerre-ELM Wiener model. Once the unknown nonlinear system is identified using Laguerre-ELM Wiener model, a generalized predictive control (GPC) algorithm is designed for control of nonlinear system. The advantage of the proposed control method is that it transfers a nonlinear control problem to a linear one by inserting the inverse of static nonlinear section. Simulation results demonstrate the effectiveness of the proposed identification and control algorithms. [ABSTRACT FROM AUTHOR]

The article discusses the method and technique for making stands from elm.

The article announces Tree of the year 2019 awards given to Elm tree at the Berlin Zoo in the presence of German Federal Minister of Agriculture, Julia Klockner.

In the operational optimization and scheduling problems of actual industrial processes, such as iron and steel, and microelectronics, the operational indices and process parameters usually need to be predicted. However, for some input and output variables of these prediction models, there may exist a lot of uncertainties coming from themselves, the measurement error, the rough representation, and so on. In such cases, constructing a prediction interval (PI) for the output of the corresponding prediction model is very necessary. In this paper, two twin extreme learning machine (TELM) models for constructing PIs are proposed. First, we propose a regularized asymmetric least squares extreme learning machine (RALS-ELM) method, in which different weights of its squared error loss function are set according to whether the error of the model output is positive or negative in order that the above error can be differentiated in the parameter learning process, and Tikhonov regularization is introduced to reduce overfitting. Then, we propose an asymmetric Bayesian extreme learning machine (AB-ELM) method based on the Bayesian framework with the asymmetric Gaussian distribution (AB-ELM), in which the weights of its likelihood function are determined as the same method in RALS-ELM, and the type II maximum likelihood algorithm is derived to learn the parameters of AB-ELM. Based on RALS-ELM and AB-ELM, we use a pair of weights following the reciprocal relationship to obtain two nonparallel regressors, including a lower-bound regressor and an upper-bound regressor, respectively, which can be used for calculating the PIs. Finally, some discussions are given, about how to adjust the weights adaptively to meet the desired PI, how to use the proposed TELMs for nonlinear quantile regression, and so on. Results of numerical comparison on data from one synthetic regression problem, three University of California Irvine benchmark regression problems, and two actual industrial regression problems show the effectiveness of the proposed models. [ABSTRACT FROM AUTHOR]

The article discusses shade trees. Topics addressed include reasons for planting trees such as beeches, oaks, maples, and elms, how much trees cost, the best time to plant one, selecting a tree based on hardiness, size, and aesthetic considerations, space trees require to grow, dealing with emerald ash borers, gypsy moths, and other pests, and more.

The short story "Somewhere, a Long, Happy Life Probably Awaits You" by Jill Sexsmith is presented.

Several photographs of some of the big trees in the U.S. including the Rio Grande cottonwood, American elm and sugar pine are presented.

The article offers information on various plants and trees, along with details on leaves, foliage, and climate preferences, including the Redpointe Maple, the Royal Raindrops Crabapple, and the Emerald Sunshine Elm.

The article discusses how various kinds of bonsai can be disfigured without killing including the bald cypresses, the cork elm and the Torulosa or Juniperus sargentii. It says that the best time to transplant a bald cypress is in early spring, which is a time when the new buds are just appearing. According to the author, trimming too much can cause junipers to revert to juvenile growth. The results of fertilizing the Juniperus sargentii with a high nitrogen fertilizer late in the season are also discussed.

Photographs of several bonsai and suiseki collections from the National Bonsai & Penjing Museum in the U.S., including the Chinese Elm donated by Yee-sun Wu, the Rock Penjing "River in Spring" donated by the Shanghai Botanic Garden and the Golden Larch donated by Shu-ying Lui, are presented.

Abstract: A new modular code called BOUT++ is presented, which simulates 3D fluid equations in curvilinear coordinates. Although aimed at simulating Edge Localised Modes (ELMs) in tokamak x-point geometry, the code is able to simulate a wide range of fluid models (magnetised and unmagnetised) involving an arbitrary number of scalar and vector fields, in a wide range of geometries. Time evolution is fully implicit, and 3rd-order WENO schemes are implemented. Benchmarks are presented for linear and non-linear problems (the Orszag–Tang vortex) showing good agreement. Performance of the code is tested by scaling with problem size and processor number, showing efficient scaling to thousands of processors. Linear initial-value simulations of ELMs using reduced ideal MHD are presented, and the results compared to the ELITE linear MHD eigenvalue code. The resulting mode-structures and growth-rate are found to be in good agreement (, , with Alfvénic timescale ). To our knowledge, this is the first time dissipationless, initial-value simulations of ELMs have been successfully demonstrated. [Copyright &y& Elsevier]

The article offers information on Stonehenge Station, a garden located at Glen Innes, New South Wales. Stonehenge, established in 1838 got its name from the naturally occuring granite boulders and is a soft green woodland having 47 garden beds and three large water features. The garden is currently owned by Bob Grady, a cattle breeder and like arboretum, it includes Portuguese cork oak and English elms. According to Bob, Stonehenge is a wonderland for ripening fruits during warmer months.

This article relates the author's memories of his childhood. The author remembers when his father sawed up three redwood boards to make a bench under a pin oak, when Dr. Hill conducted a physical examination on him, and when the office nurse, Mrs. Coburn, shot tetanus or polio vaccines on his upper arms. The author also when men chain-sawed down all the elms on 48th Street, sparing only one elm, which stood on a front lawn at the corner of 48th Street and New York Avenue.

Focuses on the high quantity of pollen dispersed as a result of the over-planting of male trees and plants. Replacement of English or American elm trees with unisex-flowered, wind-pollinated trees; Replacement of elms in Japan with Japanese cedar, which produces a lot of pollen; Opinion that very little attention is given to pollen production.

Talks about the efforts of people in Winnipeg, Manitoba to save their elm trees from extinction. History of the first elm tree in Winnipeg; Characteristics of the Winnipeg elm; Efforts to curb the Dutch elm disease.

Discusses the race to revive embattled elm trees as of May 1998. The efforts of plant geneticist Denny Townsend to resuscitate the American elm; Comments from Townsend; The importance of the elm tree to American society; The impact of Dutch elm disease on elms in Europe; The number of elms that line the National Mall in Washington, D.C.; Estimate by Townsend as to the number of American elm trees out of 100,000 that can resist Dutch elm disease.

Traces the history of elm trees in the U.S. Logan Elm, which was named after Logan, 18th-century chief of the Mingo Indians; Louis Vieux Elm, a 271-year-old elm in Kansas that was once declared the state champion American elm; Arrival of Dutch elm disease in the U.S. in the early 1900s; Development of the American Liberty Elm, which has a high level of resistance to Dutch elm disease.

Only two of the 20-odd species of elm trees are resistant to Dutch elm disease. Both a replacement for the American elm and a cure for its flaws are being looked into. INSET: Instead of elms--some high-canopied shade trees.;temperature....

The author presents a personal narrative of his experience of detecting unnatural browning of leaves from lacebark elm tree in the early summers in Austin, Texas after which he found that the tree was suffering from cotton root rot disease caused by the fungus Phymatotrichopsis omnivor.

The article provides information on the American elm tree. The tree can adapt to almost any weather, to any soil and to almost any surrounding. Its roots are shallow that it can grow in the meagre earth of parks and malls built over subways, tunnels and underground garages. The shade of the tree is over nearly half an acre. It highlights the significance of the tree to U.S. history.

The article informs that architect Tony Milne celebrates the hues and the bounty of autumn season. It mentions that dry-stacked schist walls express the underlying geology and the cultural overlay of the Central Otago landscape; and aghast at the barrenness of their new home, oaks, sycamores, elms and ashes were introduced by the early gold miners and settlers to Arrowtown, New Zealand.

The article focuses on a Minnesota home that was previously shaded by a century-old elm in its front yard. It states that the tree split into three sections, one crushing a table and patio, another damaged the hedge, and blocked the street. It says that the owners realized that they had a better view of Lake Harriet, thus adapting Bachman's landscaping to allow a full sun environment. It adds that the family hired Alyson Landmark of Bachman's to develop the landscape.

The article informs that Alberta is free from Dutch Elm Disease (DED) which is widely spread across North America. It states that DED is caused by the Ophiostoma ulmi which affect elm trees through insect vectors. It further states that the Society to Prevent Dutch Elm Disease (STOPDED) is responsible for monitoring the entry of beetles in Alberta region and they are successful in making Alberta free from DED.

The article offers tips on growing bonsai. According to the author, bonsai should be grown outdoors. She states that the best hardy trees for a bonsai project are juniper, pine, Japanese maple and elm. She claims that bonsai trees require regular watering and once or twice-a-year shaping, preferably during late spring or early fall. She advises choosing a pot with a width that is two-thirds the height of the tree and with a depth that is one to two times the thickness of the trunk at the base.

Four flavan-3-ols, (+)-catechin ( 1), (+)-catechin 7- O- ?- D-apiofuranoside ( 2), (+)-catechin 7- O- ?- D-xylopyranoside ( 3), (+)-catechin 7- O- ?- D-glucopyranoside ( 4), and proanthocyanidin A-1 ( 5) as well as three other constituents, isolated from an EtOAc-soluble extract of the stem barks of ULMUS DAVIDIANA var. JAPONICA, were evaluated for inhibitory activity against the formation of AGEs. Compounds 1?-?5 exhibited a significant inhibitory activity on the formation of AGEs in an AGEs-BSA assay by specific fluorescence and this was confirmed by an indirect AGEs-ELISA. Moreover, compounds 1 and 5 markedly reduced AGEs-BSA cross-linking to collagen in a dose-dependent manner. AGEs:advanced glycation end products BSA:bovine serum albumin CC:column chromatography CD:circular dichroism [ABSTRACT FROM AUTHOR]

Offers various information on American elms. Historical significance of the American elm; Cause of the death of elms in the U.S. in the 1930s; Search for other species to replace the American elm; Development of strains of the American elm that are able to survive the Dutch elm disease.

Presents the poem "Slippery Elm," by Emily Hiestand.

Comments on issues relevant to science. Commendation of the addition of a 'Personal Column' in the journal 'Mathematical Intelligencer'; Absence of Dutch elm disease among the Dutch elms in Amsterdam; Features of Kodak's document management system called KIMS.

The article focuses on the White House elm tree, which is a direct descendant of the tree that former U.S. president John Quincy Adams planted in 1826 and is considered as a symbol of political reconciliation. It states that former presidents Thomas Jefferson and John Adams, who were embittered by politics, have reconciled, and the tree is their living symbol. It adds that the original tree is decaying and gardener Irvin Williams takes seeds each spring to ensure that the legacy will live on.

The article provides information on the benefits of transplanting trees to factory sites. It mentions the effect of trees and a beautiful environment on the efficiency of factory employees. It offers a background on the transplantation of a large number of elms from an average distance of nine miles to Harvard College yard in Cambridge, Massachusetts.

http://discovermagazine.com/2001/sep/feattree

In early May, the long-expected Dutch elm disease crossed the Saskatchewan border. An infected tree was found in Wainwright, 120 miles southeast of Edmonton. Simultaneously, however, an experimental 'inoculation' against [...]

The article reports on the Flutter elm (Ulmus laevis) that was born on November 9, 2018, was officially proclaimed the Tree of the Year 2019 in Germany.

The article discusses a new research finding from Central Drug Research Institute (cdri), under the Council of Scientific and Industrial Research (csir) of a plant based treatment for the disease Osteoporosis which uses the extract from the leaves of Himalayan elm (Ulmus wallichiana) has the potential to treat bone loss and can increase bone mineral density in women after menopause and extract has been made from sheesham leaves which are renewable and the raw material is freely available.

The article presents the author's views on trees, especially Chinese elms. The author expresses his love for trees and his sister's love for flowering plants. He justifies his love for elms saying that the tree manages to survive the harsh South Dakota environmental conditions. He also mentions the shelterbelts of South Dakota and how the lack of foresight would affect the environment.

The article focuses on the use of food supplements in the diet to relieve digestive problems including upset stomach, heartburn, bloating, and diarrhea. Topics discussed include cause of Gastroesophageal reflux disease (GERD) and heartburn due to chronic overeating, skipping fast foods and convenience foods to avoid digestive problems, and using bacteria including lactobacillus, digestive enzymes including Glutamine, and herbs including Slippery elm.

The article offers information on the masterpieces in bonsai art. Topics discussed include the creative ability in bonsai styling, the technical and cultural attributes of masterpieces, and the importance of originality. Also provided are details regarding some of these works including Chinese elms by Zhao Qingquan, Sargent Juniper by Masahiko Kimura, and Pinus sylvestris by Giovanni Genotti.

The article provides a partial list of host native woodies in the U.S. and the number of species of caterpillars that rely on them. The list of local woodies include oaks, cherries, willows, elms, poplars, maples, and beeches. Notable native caterpillars include the larvae of various butterfly and moth species such as double-toothed Prominent, Hackberry Emperor, giant swallowtail, honey locust moth, and Cecropia silkmoth.

The arctile presents opinions by viewers on sightings of various butterfly and moth species. Jim Nero mentions that Cercropia moth caterpillars became common in northeastern Ohio from August to September 2008 due to using host plants including Buddleja, elm trees, and maple trees. Jim Duquesnel says that the butterfly magazines he read like "Butterfly Gardener," "Audubon," and "Amicus," became common reading materials in waiting lines at hospitals.