54,530 research outputs found

    Analysis of surface mount technology solder joints

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    This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The factors determining the quality of surface mount technology (SMT) solder joints are numerous, and complex. The exploration of these factors, and how they may affect the reliability and quality of the joints can only be achieved through continuous research. In this project, essential areas of SMT joints were selected for study and analysis, with the intention of providing additional design and process guidelines for the production of quality SMT joints. In the infrared reflow process, one of the common defect phenomena is the occurrence of tombstoning; that is after soldering only one end of the component is soldered while the other is lifted up, assuming a position like a tombstone. The initiation of tombstoning during reflow was analysed based on the forces acting on the component. A model was developed to predict the initiation of this phenomenon. The model shows that, under vibration-free conditions, the surface tension of the molten solder is the source of the force causing the initiation of tombstoning. The contact angle, which varies with the length of the printed circuit board solder land, has a significant effect on the value of the surface tension acting as a force pulling upward on the component. The model further shows that tombstoning initiation is due to the combined effects of the surface tension; the weight of the component; the dimensions of the component; the length of the solder underneath the component; and the length of the solder protruding from the end of the component. Selected components were used as examples for predicting the conditions of initiation, and these conditions were further substantiated by a series of experiments. Another area of study was a method which directly pulled the components off printed circuit boards and this was used as a means for testing the bond quality of surface mount technology leadless chip solder joints. Components D7243, CC1206, RC1206, RC121O, and CC1 812 were selected for this study. It was found that the ultimate tensile force which breaks a component off the printed circuit board has the potential to be used as a parameter for measuring the quality of the solder joint. The effect of solder thickness on the strength of a joint has also been investigated. The shape of joints soldered by two methods, wave soldering and infrared reflow, were compared. Joints at the two ends of a component produced by infrared reflow were found more uniform than the ones produced by wave soldering. A recommendation is made here for the wave soldering approach in achieving uniform solder joints. The effects of solder shape on the joint strength were further investigated by finite element analysis. A convex joint was found marginally more robust than a concave joint. Two aspects of the internal structure of SMT solder joints were investigated, void content and copper/tin intermetallic compounds. The voiding conditions of wave-soldered and infrared reflow joints were compared. No voids were found in all specimens that were produced by wave soldering. However, there were always voids inside joints produced by infrared reflow. Microhardness tests indicated that the hardness of compounds at the copper/solder interface of infrared reflowed joints is lower than that in the wave-soldered joints. It is considered that the lower hardness of the interfacial region of the infrared reflowed joints is due to the presence of voids. Scanning electron microscopy was used to study the formation of copper/tin intermetallic compounds for joints produced by infrared reflow. The results show that Cu 6 Sn5 was the only compound with a detectable thickness. Other compounds such as Cu3 Sn, were virtually not found at all. Aging of the joints at 100°C, shows that both the Cu 6Sn5 and the overall interfacial thickness grew with time. One of the important areas which had been overlooked previously and was studied in some details was the effects of solder paste exposure on the quality of solder paste. The characteristic changes of solder paste due to exposure were investigated in three areas, weight loss, tackiness, and rheology. The evaporation of low boiling point solvents was considered as the main contribution to the loss in the weight of the solder paste. The weight loss against exposure time was found to follow an exponential behaviour. A method was designed to evaluate the tackiness changes of solder paste due to exposure. It was found that the decay of tackiness against exposure time can be expressed by a power law. It is recommended that solder paste manufacturers should provide the necessary characteristic constants so as to enable the characteristics to be calculated after a specific exposure. The rheological changes of the solder paste as a result of exposure were also investigated. The implication on the printability of the solder paste due to these changes was studied and discussed

    Evidence for the decay B0→J/ψω and measurement of the relative branching fractions of meson decays to J/ψη and J/ψη′

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    First evidence of the B 0 → J / ψ ω decay is found and the B s 0 → J / ψ η and B s 0 → J / ψ η ′ decays are studied using a dataset corresponding to an integrated luminosity of 1.0 fb -1 collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. The branching fractions of these decays are measured relative to that of the B 0 → J / ψ ρ 0 decay:frac(B (B 0 → J / ψ ω), B (B 0 → J / ψ ρ 0)) = 0.89 ± 0.19 (stat) - 0.13 + 0.07 (syst),frac(B (B s 0 → J / ψ η), B (B 0 → J / ψ ρ 0)) = 14.0 ± 1.2 (stat) - 1.5 + 1.1 (syst) - 1.0 + 1.1 (frac(f d, f s)),frac(B (B s 0 → J / ψ η ′), B (B 0 → J / ψ ρ 0)) = 12.7 ± 1.1 (stat) - 1.3 + 0.5 (syst) - 0.9 + 1.0 (frac(f d, f s)), where the last uncertainty is due to the knowledge of f d / f s, the ratio of b-quark hadronization factors that accounts for the different production rate of B 0 and B s 0 mesons. The ratio of the branching fractions of B s 0 → J / ψ η ′ and B s 0 → J / ψ η decays is measured to befrac(B (B s 0 → J / ψ η ′), B (B s 0 → J / ψ η)) = 0.90 ± 0.09 (stat) - 0.02 + 0.06 (syst)

    Searches for B0(s)→J/ψppˉ and B+→J/ψppˉπ+ decays

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    The results of searches for B0(s)→J/ψ pp¯ and B + → J/ψ p p¯ π+ decays are reported. The analysis is based on a data sample, corresponding to an integrated luminosity of 1.0 fb−1 of pp collisions, collected with the LHCb detector. An excess with 2.8 σ significance is seen for the decay B0s→J/ψ pp¯ and an upper limit on the branching fraction is set at the 90 % confidence level: B(B0s→J/ψ pp¯) < 4.8 × 10−6, which is the first such limit. No significant signals are seen for B0 → J/ψ pp¯ and B+ → J/ψ pp¯ π + decays, for which the corresponding limits are set: B(B0→J/ψ pp¯) < 5.2 × 10−7, which significantly improves the existing limit; and B(B+→J/ψ pp¯π+) < 5.0 × 10−7, which is the first limit on this branching fraction

    Observations of Bºs→ψ(2S)η and Bº(s)→ψ(2S)π+π- decays

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    First observations of the B0s →ψ(2S)η, B0 →ψ(2S)π + π − and B0s →ψ(2S)π + π − decays are made using a dataset corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment in proton–proton collisions at a centre-of-mass energy of √ s = 7 TeV. The ratios of the branching fractions of each of the ψ(2S) modes with respect to the corresponding J/ψ decays are B(B0s →ψ(2S)η) ÷ B(B0s →J/ψη) = 0.83± 0.14 (stat)±0.12 (syst) ±0.02 (B), ; B(B0→ψ(2S)π + π − ) ÷ B(B0→J/ψπ + π − ) = 0.56± 0.07 (stat)±0.05 (syst)± 0.01 (B), ; B(B0s →ψ(2S)π + π − ) ÷ B(B0s →J/ψπ + π − ) = 0.34± 0.04 (stat)±0.03 (syst)± 0.01 (B), where the third uncertainty corresponds to the uncertainties of the dilepton branching fractions of the J/ψ and ψ(2S) meson decays

    Measurement of the Bs0J/ψKS0B_s^0\to J/\psi K_S^0 branching fraction

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    The B 0 s → J/ψK 0 S branching fraction is measured in a data sample corresponding to 0.41 fb−1 of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin 2β measurement from B 0 → J/ψK 0 S . The time-integrated branching fraction is measured to be B(B 0 s → J/ψK 0 S ) = (1.83±0.28)×10−5 . This is the most precise measurement to date

    Mount Royal College Varshicom 1945

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    The annual publication of the students of Mount Royal College, Calgary, Albertapdfffioe d /l-wic /</ St. fcf&T,Since 1910 Mount Royal College has been one of the leading Educational Institutions of Calgary. Twenty-one years later, in 1931, it became a Junior College, affiliated with the University of Alberta. Hon. Vincent Massey designed the crest, on which is inscribed our motto: “Quam bene non Quantum”—“Quality rather than Quantity.” JOHN H. GARDEN, B.A., B.D. Principal tyo^eeu-oJid By JOHN HENDERSON GARDEN, B.A., B.D., Pn’ncfpaZ • I am pleased to send this little foreword forth with the 35th Yearbook of Mount Royal College. How much we have appreciated you who are our students of what we hope may be the year of victory. In fact Mount Royal College waited thirty-five years for you, and the College is very hopeful that you may make a very special contribution in building a better world. This has been a year of deep significance in the work of the College. There has been enrolled the largest group of students ever to attend and yet the work has progressed with a smoothness and harmony that has been reflected in the high standard of marks obtained. There has been lots of fun and good fellowship but through all there has been a note of seriousness re­flecting the titanic struggle that has been taking place throughout the world and leading everyone to make the best of his time so that he may be better fitted for .the new day following peace. i The year has passed quickly. It just seems like yesterday since we came to the College last Fall somewhat nervous but with high expectations. Today we are going forth with a clearer vision of the tasks that lie before us and better equipped to meet them. A great challenge comes to us all to so live and give such leadership that the sacrifices of our comrades may not be in vain. We have remembered with appreciation the names of our former students and members of the staff who are serving in the war and have grieved deeply as some of the finest have paid the supreme sacrifice. “They shall not grow old as we who are left grow old, Age shall not wither them nor the years contemn, But at the going down of the sun and in the morning We will remember them.” We deeply mourn their loss, but pledge ourselves anew to make real their vision of a better world, remembering that— “What builds a nation’s pillars high And its foundations strong? Men who for truth and, honor’s sake Stand fast and suffer long. Brave men, who work while others sleep, Who dare while others fly— They build a nation’s pillars deep And lift them to the sky.”Architect’s sketch of the proposed KERBY MEMORIAL BUILDING / ^be(liccCUo-H NE YEAR AGO we dedicated the Yearbook to the late Dr. G. W. Kerby, our beloved Principal Emeritus. This year we are proud to dedicate this book to the proposed Kerby Memorial building which is to be erected to the memory of Dr. G. W. and Mrs. Kerby. This buildifig will not only be a fitting memorial to the founders of the College but will also provide much needed accommodation. The plan is to concentrate classrooms, laboratories, administrative offices and an up-to-date gymnasium in the new building while the present plant will be renovated and changed to provide more residential facilities and improved studios for the Conservatory of Music. In the main hall of the Kerby Memorial building there will be a special memorial section preserving the photographs of Dr. G. W. and Mrs. Kerby and other historic pictures and documents concerning them. There will also be a book of remembrance telling of the life and work of Dr. G. W. and Mrs. Kerby and recording for future reference the names of all contributors to the Kerby Memorial Building. It is the desire of the College Board to preserve for succeeding generations of students something of the spirit of the Kerbys and to memorialize their supreme work in Calgary which was the founding and establishing of Mount Royal Junior College. The following editorials that appeared in the Calgary papers will indicate how heartily the community has endorsed this idea of a Kerby Memorial building. The Calgary Daily Herald, December 4th, 1944, said: “No finer memorial could be erected in honor of the late Dr. G. W. Kerby than the 100,000 build­ing planned by the governors of Mount Royal College. Its construction has become imperative because of the continuous expansion of the College’s acti­vities, and when completed will bear the name ‘Kerby Memorial Building’. This institution fills an important role in the province’s educational system. It provides facilities for carrying students through the first two years of their University course and it also has courses in musical instruction and other branches. It is in every sense of the word a junior university, and the high type of instruc­tion is evidenced in the many scholarships and other awards won by its students.” “Dr. Kerby spent many years in this city, much to the community’s benefit. In Mount Royal College he left to it a centre of learning of which all citizens are proud. It is highly fitting that his name and memory should be perpetuated for many years to come by what will be a fine memorial building, dedicated to the work in which he was most interested.” The Calgary Morning Albertan, December 5th, 1944, said: “The idea of this memorial seems a very happy one. Dr. and Mrs. Kerby founded Mount Royal College and it is probable the school was their favourite among the many enterprises which they organized in Calgary. An extension of the College building to take care of the steadily increasing enrolment would be an ideal memorial for this pioneer clergyman and educator. The project will certainly receive the support of the people of Calgary.” The proposed Kerby Memorial Building will enable Mount Royal to render better service to the youth of Calgary and Southern Alberta by furnishing up-to-date facilities and making possible an extension of the work the College is carrying on. We students of this year greatly appreciate what the College has done for us and heartily congratulate those who will follow on the improved accommodations that the Kerby Memorial building will provide and we are glad that the spirit of Dr. G. W. and Mrs. Kerby will be preserved for succeed­ing groups of students. 5 Mount Royal College Administration Staff and Faculty GEORGE WALTERS Mrs. MILDRED BELL Ralph w. McCready JOHN HUGHES MARY J. WASHBURN BARBARA M. CRAIG NORMAN S. FREE I GLENN B. HINCHEY ETHEL THORNTON MABLE E. ROBERTS WILFRID BENNETT LEO E. PEARSON LEONA F. PATERSON F. D. B. JOHNSON JASCHA GALPERIN LEONARD H. LEACOCK NORMA PIPER CYRIL S. MOSSOP GWEN PARSONS GLADYS BORTHWICK ROBERT SPERGEL WINNIFRED LACEY JOAN HOBSON MART VAN STOCKUM 'VgaaIucg+h 1W-5 Ted Gee__________ Bill Lyons________ Mr. Walters______ Frances May______ Mr. Kelly_______ Bill Harrison _ Eileen Hart_____ Algie Bowhay___ Wilda Bussey___ Wendy Wynn____ Bill Stiles________ Margery McKechnie Jim Dalton________ Isobel Anderson___ George Villett___ Eleanor Whitbread. Shirley Coombs--_ __________ Editor _______ Co-Editor Business Manager ________ Secretary _________ Advisor Continuity Editor ___Social Editor Photography _ _ Humor ________ Literary _____Photography ____________ Art __________ Sports Biographies . Biographies ___ Biographies _ ____ Biographies 8 A'p^pAeclatio-ti AND now we leave another too short a year at Mount Royal College behind us, but not the many happy memories of good times, the wonderful friendships, and the petty quarrels with one another. When we have entered into this world of boundless opportunities and take our place among them, we will recall the little troubles we had with our studies, the way our teachers stepped on us when we needed it, the Friday night dances, and then discover that these and more composed the binding of all into one at M.R.C. With the passing of this year, through headaches and sacrificing of time on the part of an unnamed many, another V arshicom has been completed. We have tried hard to make this Year Book a success and we wish that in future years the students of M.R.C. may profit by our mistakes. I wish to express my sincerest appreciation to my untiring and reliable staff whose contributions of time and effort, have made the publication of this book possible. To Mr. Garden, Mr. Walters and Frances May, whose experience proved to be the foundation of the compilation of this V arshicom. We hope it may, in years to come, serve as a source of many happy fireside memories of the gang yon knew at. good old M.R.C. TED GEE, Editor. 9Students Mount Royal College t Robert McCulloch George Villett___ Mr. Kelly______ Don Phillips_____ Bessie Armstrong Gerald Matlock. Fae Adam______ June Cecil______ Jim Barber________________________ _______________________ June Blair________________________ ________________________ Phyllis Fitch................... ................. __________ President ___ Vice-President _____ Advisor President University President Commercial President High School __ ________Secretary ___ ____ Treasurer Boys Sports Girls Sports -Social 10 Valedlicto-^ PERHAPS as you have walked through the halls of Mount Royal College you have seen the small, friendly groups which gather here and there.' This day a* few of us were discussing the practical value of education when Bill told us what education meant to him. As T can remember it, here is his story. Not far from Bill’s home was an immense forest which had always fascinated the young man. One day he walked to it. Leading into the dark hollows ahead was a wide path which Bill followed unhesitatingly, until he came upon a magnificent palace, glittering with light. “Who are you, von young boy, and what are you gentle voice spoke beside him. Bill looked up at the gracious lady touching his shoulder with a quiet hand. “My name is Future”, the soft voice continued, “this is my home. I have many children like you. Right now they are out in the World, where, because they are getting things ready for me, they are called the Destinies. Goodness, it is past their suppertime! Already I can hear two of them quarrelling. Hope and Despair both want to control a young man who has lost his job.” With that she blew five long blasts on a bugle. To Bill, no time passed before several tiny creatures stood before Future. “Now children, how does the world stand today?” asked Future. Pessimism grinned as he replied, “Mr. Mankind is a little troubled today. He is fighting himself, all by himself.” Bill listened sadly, “I wish I could help you, Future. However, I’m just a student at school. What can I do to help you?” Future smiled and was beautiful. “You can be of wonderful help, for I do need you, greatly. I want you to travel to the land of knowledge. It is far, far away, but two of my favorite Destinies, Ambition and Perseverance, will accompany you till you reach Knowledge. Then you must journey alone continually searching the land till you find my three lost babies—-Love, Toler­ance and Unselfishness. If you find them, they will take you to the land of Truth. If you reach Truth, Bill, Mr. Mankind will find peace. I will be safe and promise to give my youngest child, Happiness, to the World. Before you leave, here is a compass to guide you on your trip. It is called Memories. Treasure it well for you will need it! Now go!” Lifting his hand in farewell, Bill the student, who had found the meaning of Education, walked out into the World in search of Truth. V/v/an Suey UNIVERSITY JOHN DUNNING ANNETT (Jackie Boy) Favorite Expression—Phttt (in three tones). A mbition—Electric Engineer. Characteristic—-Brain child. Activities—-Calgary Tanks and Wendy. ELEANOR WHITBREAD Favorite Expression—“Yes Dear”. Ambition—Social Service. Pastime—-Painting. Activities—-Mount Royal College. MERRITT FIZZELL Favorite Expression—We’d just as soon not say. A mbition—Travel. Pastime—Late for classes. A ctivities— Swimming, music. DONALD PHILLIPS (Lashes) Favorite Expression—“Things is picking up.” A mbition—-Chemical Engineering. Characteristic—Popular, peppy and priceless. Activities—-President of ’Varsity, Basketball. I Consort Calgary Calgary Calgary CHARLES McCULLAGH (Flunky) Favorite Expression—-“Yes, master.” Ambition—To hold his chair in class. Characteristic—Masterful, muscular and magnificat. Activities—-Fixing his luxury 7 passenger sedan. PEGGY LAWRENCE (Peg) Ambition—Great singer. Pastime—Singing in the bathtub. Activities—Drawing, Dancing, Calgary Calgary 12 EUNICE WADE Favorite Expression—“Ha! Ha!” Ambition—Chemical research. Characteristic—Usually quiet, sudden outbursts when Activities—Skiing, anything that takes little energy. WILLIAM ANDIS ON (Bill) Favorite Expression—“Does anyone want a cigarette?” Ambition—Geologist. Characteristic—Good-hearted, long hair. Activities—Calgary Tanks, Gus’s. CHARLES GARDEN (Chas) Favorite Expression—“Wouldn’t that rot your socks?” Ambition—Medical profession. • Characteristic—Gallant, genial and glib. Activities—Basketball, neighborly homework. MARGARET GREENE (Garg) Favorite Expression—‘ ‘Jimmy-j immy-j immy. ” Ambition—University of Toronto. Pastime—Attempting to sleep in. Activities—’Getting roommates off to classes. MARY DUNCANSON (Dune) Favorite Expression—“Oh damn!” AanbaYa'on—One week without a fight with Mike. Pastime—Mike. Activities—Gus’s for a cigarette. ROBERT MITCHELL (R & M) Favorite Expression—“Huba-huba-huba.” Anabaia’on—Obstetrician. Characteristic—Witty (he wrote the boys’ biographies). Acia’va’ia'es—Skating and shaving. RAYMOND BROWN (Ray) Favorite Expression—“Good show.” Ambition—-To discover a substitute for work. Pastime—-Trumpet (can he play!) Activities—-Hockey. KATHLEEN HOLMES Favorite Expression—“I’m so mad I could------.” A mbition—Undecided. Pastime—Music. Activities—Homework. LORNA BOON Favorite Expression—“Well now, lut’s see.” Amba’fa’on—Social service. Pastime—Knitting diamond socks. Activities—Skating, riding. NEIL McKAY Ambition—Pass French. Pastime—Homework, and a few women on the side. A ctivities—Hockey. HAROLD ANDERSON Favorite Expression—“Barber, clean up the room.” AwabaVaon—Chemical engineer. Pastime—-It isn’t MRC girls. Activities—Hockey and Softball. MARJORIE PATTERSON Favorite Expression—“Wha-da-ya mean?” Ambition—To travel. Pasiame—Thinking. Activities—Skating, riding, dancing. Calgary Innisfail Lethbridge Cranbrook Kathym Raymond Banff Keoma Delacour Calgary Calgary awake. Cochrane (Different, eh?) 13 ROBERT SAWICKI (Bob) Favorite Expression—‘ 1 Brrrack!! ” Ambition—Shave and have breakfast on the same morning. Characteristic—Saintly, suave, stolid sender. Activities—-Carrying “bags” at Palliser. JEAN SPANKIE Favorite Expression—-“Oh my goodness.” Ambition—Concert Singer. Pastime—Readin g. Acimte'es—Skating, music. DONALDA BRECKEN (Donna) Favorite Expression—“Hey, you guys.” Ambition—-Linguist. Pastime—-Piano, designing hats. Activities—-Swimming, dancing, golfing. DAVID BURGE (Dave) Favorite Expression—“Whatcha doin’ boy?” Ambition—Orchestra Leader. Characteristic—Bashful, beneficial and brawny. Activities—African golf. ROBERT SMITH (Snuffy) Favorite Expression—“Well, Gee!” A mbition—-Petroleum Engineer. Pastime—Bumming cigarettes. Activities—Mountain climbing, skating, swimming. MARGARET WANNOP (Marg) Favorite Expression—-(Facial expressions). Ambition—-To just pass everything. Pastime—Music. A ctivities—Roller skating. VIVIAN SUEY (Chop) Favorite Expression—“Oh you cow!” Ambition—-Educate the Chinese women in China. Pastime—Writing. A ctivities—-Skating. PETER VALLANCE (Moose) Favorite Expression—“Open the windows.” A mbition— Lawyer. Characteristic—-Valuable, versed and vital. Activities—Skiing and wolfing. NORMAN WHITNEY (Norm) Favorite Expression—-“Women are necessary.” Ambition—Oil geologist. Characteristics—-Wobbly, watchful wizard. Activities—Hockey, hunting, fastball. Calgary Calgary Calgary Calgary * Banff Calgary l Consort Calgary Langdon AILEEN DANAHER (Danny) Winnipeg Favorite Expression—“Wouldn’t that jar your mother’s preserves.” Ambition—Pin-up girl. Pastime—Keeping the boys happy. A ctivities—M en. SARAH PEARLMAN Calgary Favorite Expression—-“Heavens!’’ Am/n’tfott—To find a pair of stockings that don’t turn red in Lab, Pastime—-Phys. Lab. with Charlie McCullagh. Activities—Wolfing in Physics class. HAROLD WARD (Frankie) Calgary Favorite Expression— ‘You don’t need coupons for my sugar.” Ambition—-To shave. Characteristic—Silent, but not safe. Activities—Visiting Crescent Heights High School. 14 MILDRED TRAUB Favorite Expression—“Oh horrors!” A mbition—Missionary. Pastime—M usic. A ctivities—Waiting for street-cars. SAM HUBERMAN (Samikins) Favorite Expression—-“Aaa! shet ep!” Ambition—Nurse’s aid. Characteristic—-Handsome, honest and humane. Activities—C.C.FReclaiming Sawicki’s jokes. Didsbury Calgary NEIL CARPENTER Calgary Favorite Expression—-“By my sliderule it’s approximately------.” Ambition—-Petroleum Engineer. Characteristic—Capable, constructive and corny. Activities—Helping our teachers. ISABELLE STEVENSON (Izzie) Calgary Favorite Expression—“I don’t know a thing about it.” Ambition—-Medical Doctor. Characteristic—Studious. A ctivities—Riding. DAISY AMBURY Favorite Expression—“But definitely.” A mbit ion—Teacher. Pastime—-Her car. DONALD GLASS (Dracula) Favorite Expression—-“This is what I think.” Ambition—-Field Marshal. Pastime—Model Aeroplanes. A ctivities—-Skating. Calgary Pincher Creek MURRY CARMACK Favorite Expression—“Deah, deah.” A m?niwn--Surgeon. Pastime—Poetry for the “Herald” Activities—-Concert Pianist in Vancouver. Nanton Prayer of a College Student By Francis Chapman Our Father, may 1 live this term, Not blinded by the social press, The sports, the fun, the interest Of college life. Keep free my mind from cluttering things, To hear always the song that sings, The grasp from flight, the thought that wings Through mind and heart; The task that thou hast given me, To keep my will from ruling me, To keep my mind and body free For Thee to use. Help me remember while I’m here, With thankfulness, that in this year, I, privileged, may leave and here Prepare for life. 15 Birds of a Feather. Sweet and Low Down. Who won? Youse guys want burghers? Scram, Pee Wee. Where’s the Janitor? Glamour Boy. We Three. Careful! Four Belles. Recess. Study Period. Stinky, T.B. or Not T.B.? Handsome, eh! Sun-daze. Hmmmmmmmm! D-Day, H-Hour Janie. The Three Bares. Georges. Kerby House. Daily Dipper. Proff. Oscar’s a papa. 16 IT PAYS TO SHOP at EATON’S • WIDE ASSORTMENTS • LEADING VALUES • SATISFACTION . . OR YOUR MONEY BACK Look for this Seal on our Price Tickets. It denotes merchandise brought to you as outstanding value at the price. 8th Ave. at 3rd - 4th Sts. ru LIINMITED Phone M85 ROBERT McCULLOCH (Bart) Favorite Expression—“He nauseates me.” Ambition—To get rich and married fast. Pastime—D.J. and we don’t mean perhaps. Activities—President of Students’ Council; hockey. ISOBEL ANDERSON (Andy) Favorite Expression—“Well kid.” Ambition—To go down East (University). Pastime—Writing one Marv Bishop. Activities—Year Book Staff. MARIAN BUNYAN Favorite Expression—“You’re telling me.” Ambition—She won’t admit it. Pastime—Gus’s. Activities—Music and badminton. ERNEST HAUG (Ernie) Favorite Expression— ‘Is that good or bad?” A mbition—-Electrical Engineer. Pastime—-M arian. Activities—Hockey and badminton. I Acme Medicine Hat Wembley Waterton Lakes ERNEST MAINWOOD (Ernie) Calgary Favorite Expression—“Let’s get lost.” A mbition—Get pull from the Department of Education. Pastime—Displaying the Scratch Pad office to innocent women. Activities—Co-Editor of “Scratch Pad”. WENDY WYNN Vancouver Favorite Expression—“Do I have to get up?” A mbition—-Northwestern. Pastime—-Could it be Jackie Boy? Activities—Literary Editor of “Year Book”. 18 EILEEN HART (.Red) Stettler Favorite Expression—“Feu-ool. ’ ’ Ambition—To appear in “Who's Who’’. Pastime—It’s already past. Activities—Social Editor on “Year Book’’ and “Scratch Pad”. G. W. GEE (Ted or TG) Turner Valley Favorite Expression—“Who’s conceited?” Ambition—-Commercial Artist or Fred Astair. Pastime—-Singing, trying to keep his Harem happy. Activities—Editor of the “Year Book”, odd bit of dancing. WILLIAM LYONS (Tiger) Baintree Favorite Expression—“Nuts to you, Babe.” Ambition-—Join the CWACs. Pastime—-Amusing Arson. Activities—Co-Editor of “Year Book”, “Scotch Pad” Cartoonist. JANET EASTES (Janie) Ponoka Favorite Expression—“I’m sorry if I don’t meet with your approval.” Ambition—To get off Probation. Pastime—Detentions. Activities—Social Co-Editor on “Scratch Pad”. AMY GEE (Bunny) Favorite Expression—“I nearly died.” Ambition—Psychiatrist. Pastime—Algie. Activities—Dancing with her handsome brother. Turner Valley LLOYD BOWHAY (Algie) Favorite Expression—“Got 2.00 for a cup of coffee?” Ambition—Run the Calgary street cleaner. Pastime—Amy. Activities—Photographer for “Year Book”. JAMES BARBER (Jim) Favorite Expression—“Jimmy! do my Latin for me.” Ambition—-None! Is that hard to believe? Pastime—Wolfing—not in the College either. Activities—‘Basketball, Athletic Representative on Council. Airdrie Barons NORMA SHEARER (Norm) Favorite Expression—“You’re kidding, of course.” Ambition—To grow up. Pastime—Barber. Activities—Wolfing, so they tell me. Black Diamond PATRICIA BLADES (Pat) Red Deer Favorite Expression—“Now let’s talk about ‘After the war’.” Ambition—Dental Assistant. Pastime—Writing to a certain P.O. Activities—Dodging teachers during study. WILLIAM HARRISON (Arson) Redcliff Favorite Expression—“Look out, or I’ll get hurt.” Ambition—To be a second Tommy Dorsey. Pastime—Playing the fool with Lyons, moaning on the trombone. Activities—-“Year Book” copy-bov, “Scratch Pad” feature writer. JAMES HENDERSON (Jim) Favorite Expression—“Northco

    Measurement of the B0–B0 oscillation frequency &#916;md with the decays B0→D−π+ and B0→ J/ψK∗0

    No full text
    The B 0 –B 0 oscillation frequency &#916;md is measured by the LHCb experiment using a dataset corresponding to an integrated luminosity of 1.0 fb−1 of proton–proton collisions at √ s = 7 TeV, and is found to be &#916;md =0.5156±0.0051 (stat.)±0.0033 (syst.) ps−1 . The measurement is based on results from analyses of the decays B 0 → D −π + (D − → K +π −π −) and B 0 → J/ψK ∗0 (J/ψ →μ +μ −,K ∗0 → K +π −) and their charge conjugated modes

    Measurement of the time-dependent CP asymmetry in B0 -> J/ψ KS0 decays

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    This Letter reports a measurement of the CP violation observables SJ/ψK0S and CJ/ψK0S in the decay channel B0→J/ψK0S performed with 1.0 fb−1 of pp collisions at s√=7 TeV collected by the LHCb experiment. The fit to the data yields SJ/ψK0S=0.73±0.07(stat)±0.04(syst) and CJ/ψK0S=0.03±0.09(stat)±0.01(syst). Both values are consistent with the current world averages and within expectations from the Standard Model

    Letter from Arno B. Cammerer to J. R. Eakin

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    Letter from Arno B. Cammerer to J. R. Eakin describing the procedure for purchasing Bright Angel Trail

    Letter from Carl Hayden to J. B. Rickel

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    Letter from Carl T. Hayden to J. B. Rickel concerning proposed changes to Grand Canyon National Park boundaries
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